Potty training UK when to start and what to do when it wobbles

When should we start potty training in the UK?

According to ERIC, you do not need to wait for a full set of “readiness signs” before you begin helping. Think of it as potty learning: preparation, practice, then stopping nappies when you can stay close and keep the week fairly steady. ERIC says most children are ready to master more of the job from around 18 months, and that stopping nappies between 18 and 30 months is better for bladder and bowel health.

Ember’s note: that window is a guide, not a race at 18 months. Plenty of families are still mid-journey around 22 to 24 months, which is where Ember keeps the practical ideas. A later start than the toddler at nursery is not a fail. NHS Healthier Together follows the same ERIC picture: sit them on the potty early, change wet nappies promptly, and sort constipation before you stop nappies.

What does ERIC actually want you to do?

ERIC’s three-step approach is preparation, practice, then stopping nappies. You can start the early bits from when they can sit with help. Stopping nappies is a later change, and it goes better if wee and poo already feel ordinary.

• Preparation: change wet or soiled nappies promptly, talk about wee and poo in ordinary words, and check they pass soft poo most days.
• Practice: offer short potty sits after waking and after meals, still in a nappy if you like, plus a little nappy-off time after they have already done a wee or poo.
• Stopping nappies: pick a stretch without a house move, new baby, or room change at nursery. Tell them clearly that wee and poo now go in the potty.
• Clothes they can push down themselves help more than a fancy seat. A low potty, or a child toilet seat plus a step so feet are planted, is enough.
• If they are unwell or simply will not sit, ERIC says pause what feels too much. Keep the potty out, keep naming wee and poo at nappy changes, and pick it up again when the week is kinder.

What helps vs what is not a race

Look for body clues and a week you can actually support. Do not treat 18 months, or a nursery start date, as a hard rule.

What if it wobbles after illness, a new sibling, or nursery?

According to ERIC, it is common for a child who was doing well to have more accidents when routine changes, including starting nursery. Things often settle as the new place becomes familiar. Ember’s note: the same kind wobble shows up after a bug, a hospital stay, or a new baby. That is not them going backwards on purpose.

If the no-nappy week has fallen apart, pause that push kindly. Go back to practice sits and naming, keep the potty where they can see it, and try stopping nappies again when everyone has had a quieter stretch. ERIC says you do not have to abandon potty practice; you can simply do less until they feel better.

If accidents keep going, or poo is hard, painful, or rare, ERIC says check for constipation first, and talk to your health visitor or GP. Underlying constipation, a urine infection, or another health issue can sit underneath a “regression.” Night wetting is a separate job and often lasts longer than daytime pants. It is not their fault.

Do potty books actually train them?

No. ERIC uses books, pictures and a favourite doll on the potty to show what wee and poo are for, and to make the bathroom feel ordinary. That is naming and practice, not a training programme.

A short picture book at nappy-change time or on the potty is doing its job if they point, copy a word, or sit a bit longer. If family want to buy something, one simple book and a plain potty beat a boxed set that promises pants by Friday. Ember’s catalogue ideas around 22 to 24 months sit in that same spirit: help them name the job, then live it at their pace.

What about nights, outings, and nursery?

Daytime pants and night dryness are not the same skill. ERIC says some children follow on quickly after daytime success; others wet at night for years. Outings and nursery need the same words and the same plan, or the learning unravels.

• Once days are mostly dry, try naps without a nappy if the nappy is often dry on waking. Accidents are common at first. A waterproof sheet helps.
• For nights, ERIC suggests a potty sit at bedtime, drinks earlier in the evening, and no “lifting” them half-asleep for a dream wee if you want them to learn to wake.
• For outings, ERIC says avoid putting a nappy back on “just for the shop” once you have stopped. Take the travel potty and spare clothes instead.
• Tell nursery the words you use for wee and poo, and agree dates before you stop nappies. Avoid starting pants in the same week they change rooms.

A short list you can screenshot

Enough for this month without turning it into a test.

• ✓Potty learning first: name wee and poo, sit after waking and meals
• ✓Soft poo most days before you stop nappies; ask HV or GP if unsure
• ✓18 to 30 months is ERIC’s usual window, not a birthday deadline
• ✓Pick a steady week to stop nappies, not a new sibling or nursery room change
• ✓If it wobbles after illness or nursery, pause kindly and keep the potty out
• ✓Books for naming, not a three-day programme
• ✓Same words at home and nursery; easy trousers they can push down
• ✓Nights can wait; daytime pants already count