Most 2 year olds need to pee every 2 hours or 3 hours depending on how much they drink.
The more fluids the 2 year old drinks the more often they will need to pee.
As long as your 2 year old is peeing every 2 to 3 hours then they are fine.
Sometimes a 2 year old will hold their pee in for a few hour and then pee all at once.
Then again some 2 year olds will pee a little bit at a time every 20 to 30 minutes.
If the 2 year old is in diapers then they may pee the diaper a little at a time or they may hold it in and have a dry diaper for 2 to 3 hours and then wet the diaper all at once.
A 2 year old usually pees every 2 to 3 hours or sometimes sooner.
Some 2 year olds may wait until their bladder is full which takes at least 2 hours and then release the pee all at once either into the potty or into a diaper if they are wearing diapers.
So if your 2 year old is in diapers they might dribble a little pee here and there as their bladder fills and pee the diaper a little at a time.
Or some 2 year olds like mine will hold the pee in until at least 2 hours and keep the diaper dry for 2 hours and then pee all at once.
But he doesn't need changed until he pees another time in the diaper because the diapers are very absorbent and can take at least 2 pees.
If your 2 year old is potty trained or is potty training they will usually go pee every 2 hours or so.
A 2 year old can usually hold their pee for around 2 hours.
Most 2 year olds take around 2 hours to fill their bladder up before they need to pee.
So if you have a 2 year old potty training then you need to take the 2 year old to the toilet every 2 hours or so to pee.
If the 2 year old is still in diapers then they will usually pee every 2 hours and can usually go 4 hours with the same diaper before they need a diaper change.
My 2 year old boy only needs a diaper change every 4 to 5 hours depending on how much he drinks.
There's no need to change the 2 year olds diaper after they pee once because diapers can hold more than a few pees.