Sippy Cup to Open Cup: A Step-by-Step Transition Guide

Quick answer

Start offering a small open cup of water with meals around 6 months, once your baby can sit upright with support, and keep the sippy cup for outings and stroller rides. Move to open cups for most seated drinking by 12 to 18 months. Go slowly, expect spills, and let your child practice a little every day.

Most parents add a sippy cup because it works: it is portable, spill-resistant, and lets a baby drink without much help. But at some point, the same cup that made life easier can slow down the skills your child needs for real cups, straws, and mealtime independence.

You do not have to quit cold turkey. The smoothest transition from sippy cup to open cup happens in small, low-pressure steps: keep the familiar cup for travel, introduce an open cup at the table, and build from there. This guide walks through the order that tends to work best, plus the mistakes that make it harder.

When to stop using a sippy cup

There is no single deadline, but a useful rule is to keep the sippy cup as a travel tool and use an open cup as the everyday cup at the table. Many babies are ready to practice open cup drinking around 6 months, when they can sit upright with support and show interest in what you are drinking. By 12 to 18 months, most toddlers can handle a small open cup for most seated drinks.

The bigger question is not age but function. If your child only drinks from a sippy cup, they get fewer chances to practice the lip, jaw, and swallowing control that open cups and straw cups require. You do not need to remove the sippy cup all at once. You need to make sure it is not the only option.

• Keep the sippy cup for strollers, car seats, and outings.
• Offer an open cup at meals and snacks when you can supervise.
• If your child has feeding or swallowing concerns, ask your pediatrician or a feeding therapist before changing cups.

Pick the right first open cup

A first open cup should be small, light, and easy to tip without dumping a full serving of liquid. Look for a 2 to 4 ounce cup with a weighted or narrow base, or a small cup you can hold with your child. Avoid wide, heavy cups at first; they are harder for small hands to control and make spills more dramatic.

You do not need a special training cup to start. A small open cup from your cabinet works. If you want a cup that doubles as a teether or a familiar toy, a silicone option can help, but the shape matters more than the material. The goal is a cup your child can lift, tip, and set down with both hands.

• Start with 1 to 2 ounces of water, not a full cup.
• Choose a cup with a narrow base for better control.
• Skip cups with valves or spouts for practice sessions; those are sippy cups in a different shape.

Set up for fewer spills

Most open cup frustration comes from the setup, not the child. Sit your toddler upright at the table, keep the cup within reach, and stay close enough to steady it. A high chair with a tray, a small table, or your lap all work. What matters is that your child is not reclining or walking while drinking.

Use water for practice. Water is easy to clean up and does not stain or sticky up the floor. Save milk and juice for cups you are willing to manage, and keep portions small so a spill is a small spill. A folded towel under the cup or a bib with a catch pocket can save you a full cleanup.

• Practice after a nap or before a meal, not when your child is overtired or starving.
• Keep a towel nearby and react calmly to spills.
• Offer the cup with both hands and let your child bring it to their mouth.

Teach the sip, not the swallow

The skill you are teaching is a controlled sip: bring the cup to the lips, tip it slightly, take a small amount, and swallow. Many toddlers tip the cup too far and get a face full of water. You can model this by taking a sip from your own cup and narrating it: "Tip, sip, swallow."

If your child coughs or sputters, they took too much or tipped too fast. Pause, wipe, and try again with less liquid. Do not force another sip. A few successful sips per meal are enough at first. Over time, the motion becomes automatic and you can step back.

• Model the motion with your own cup at the table.
• Use a small amount of water so a mistake is not overwhelming.
• Let your child hold the cup with both hands while you guide the base.

Build a daily routine

Consistency beats intensity. Offer the open cup at the same times each day, usually with meals and snacks, so your child knows what to expect. Keep the sippy cup for travel and for times when you cannot supervise. This split keeps the routine manageable and still gives daily practice.

If your child refuses the open cup, do not turn it into a power struggle. Offer it, model it, and move on. Some children need weeks of watching before they try. Others take to it in a few days. Both are normal. The only real mistake is making the cup a battle.

• Offer the open cup at every seated meal, even if your child only takes one sip.
• Keep the sippy cup available for outings so you are not stuck without a drink.
• Track progress by weeks, not by meals.

Know when to get help

Most children move to open cups without extra support. Talk to your pediatrician or a feeding specialist if your child consistently coughs, chokes, or turns blue while drinking, refuses all liquids from an open cup past 18 months, or has trouble with other oral skills like chewing. These are not cup problems; they are feeding questions worth checking.

If your child has a medical condition that affects swallowing, follow your care team's advice over any general timeline. A cup transition is a skill-building process, not a race, and the right pace is the one your child can handle safely.

• Ask for help if drinking regularly causes coughing or distress.
• Bring the cup you use to appointments so a professional can see the fit.
• Keep practicing at home only as your care team recommends.

Your step-by-step cup transition plan

1. Step 1: Check readiness: Look for sitting upright with support, interest in your cup, and the ability to bring objects to the mouth. Start practice around 6 months if those signs are there. Checkpoint: if your baby cannot sit upright with support, wait and practice with a teether instead.
2. Step 2: Choose a small open cup: Pick a 2 to 4 ounce cup with a narrow base. Fill it with 1 to 2 ounces of water. Keep the sippy cup for travel. Mistake to avoid: using a large, heavy cup that is hard for small hands to control.
3. Step 3: Practice at the table: Sit your child upright, offer the cup with both hands, and guide the base as they bring it to their lips. Model a small sip yourself. Checkpoint: a few sips per meal is enough; stop before your child gets frustrated.
4. Step 4: Expect and manage spills: Keep a towel nearby, use water only, and react calmly. Small spills are part of learning, not a sign the transition is failing. Mistake to avoid: switching back to the sippy cup for every spill, which removes the practice your child needs.
5. Step 5: Build the habit: Offer the open cup at every seated meal and snack. Keep the sippy cup for outings and unsupervised times. Checkpoint: by 12 to 18 months, most toddlers can use an open cup for most seated drinks.
6. Step 6: Reduce the sippy cup: Once open cup drinking is steady at meals, use the sippy cup only for travel. Do not rush the last step if your child still needs it on the go. Next step: if drinking causes coughing, choking, or refusal past 18 months, ask your pediatrician or a feeding specialist.

Nuby products that can help at this stage

• Mushroom Bobble Head Teether Toy: Made of super soft silicone, it is gentle on sensitive gums, encourages interactive play, and has a suction base that sticks to most surfaces. Silicone texture and suction-base play give your baby mouthing and hand-control practice that carries over to holding and tipping a small open cup.
• Animal Adventures Spiral Activity Toy | Elephant: Attaches easily to any stroller or car seat handle and has soft plush characters, squeaks, crinkles, and rattles for sensory play. When you keep the sippy cup for travel, this toy keeps your baby entertained on outings so the car or stroller cup stays a practical tool rather than the only cup they know.

The transition from sippy cup to open cup is less about quitting a cup and more about adding a skill. Start small, practice at the table, keep the sippy cup for travel, and let your child set the pace. A few sips a day adds up faster than you expect.