It's 3am, there's a puddle in the crate, and you're wondering what you're doing wrong. Almost certainly, the answer is: less than you think. Night-time potty setbacks feel like stubbornness or failure, but they are usually arithmetic — the puppy's bladder is simply smaller than the gap you are asking it to hold. Puppies don't do spite, and they can't do maths. You have to do the maths for them. Fix the schedule and the nights fix themselves.
The widely used rule of thumb: a puppy can hold its bladder for roughly its age in months, plus one, in hours — and noticeably less than that when it's awake, excited or has just been playing. A nine-week-old is about two months old, so three hours is a realistic maximum, and two and a half is kinder. Now measure your night against it. Last trip out at 10pm and an accident at 1am is not a training failure; it's a three-hour puppy being asked for a three-hour hold and missing by minutes. Once you see the night as intervals rather than one long stretch, the fix becomes obvious.
This is the step that feels wrong and works anyway: for young puppies, don't wait for the accident or the crying — set alarms for just before the usual accident time. If puddles happen around 2am, you're outside at 1:30. Carry the puppy out half-asleep, in the dark, with minimal talking: toilet, quiet praise, straight back into the crate. Waking a peacefully sleeping puppy seems counterproductive, but this is exactly how dry nights get built — the puppy's body learns that the night is for sleeping, broken by short, boring, scheduled pit stops.
Once you have two or three consecutive clean nights at an interval, extend it by 30 to 60 minutes — no more. Small stretches stick; a heroic jump of an extra hour usually buys you a wet crate and a confused puppy, and costs you the progress you'd made. Keep a simple log on your phone: times out, what happened, accident times. Memory is genuinely unreliable at 3am, and the log is what tells you whether you're actually improving — you usually are, a few minutes of hold at a time.
An accident means the interval was too long, so return to the previous interval that worked, hold it for a few clean nights, and stretch again. That's the whole correction. Never punish, scold or show the puppy the puddle: a puppy cannot connect your morning annoyance with something it did hours ago, and punishment around toileting and the crate creates anxiety — and anxious puppies have more accidents, not fewer. Clean up, reset the schedule, move on.
Three finishing details. First, night breaks are for toileting only — dim light, no play, no fuss, no treats party — because a puppy who learns that 2am is playtime will start requesting it. Second, clean accident spots with an enzymatic cleaner made for pet messes: ordinary cleaners remove what you can smell but leave scent markers the puppy can read, and puppies return to places that smell like a toilet. Third, know when it stops being a schedule problem: if a puppy that was reliably dry suddenly regresses, strains or cries when peeing, or pees very frequently in small amounts, see the vet. Urinary infections and upset stomachs are common in puppies, and no schedule in the world fixes those.
Our free Potty Schedule Builder does the bladder maths for you: enter your puppy's age and your household's wake-up time, and it lays out the feeding, play, sleep and night-break times — including exactly the intervals this guide describes, adjusted as your puppy grows.
General guidance based on widely used puppy-raising practice — not veterinary advice. The months-plus-one rule is a rule of thumb: small breeds, health conditions and individual puppies vary, and persistent problems deserve a vet check.