Yes it's okay to wait until a diaper is full of pee before changing it.
If the child is in disposable diapers they are meant to absorb a lot of urine and keep the wetness away from the child's skin.
So unless the child is soaking wet and leaking out of their diaper then they are not feeling hardly if any wetness.
Diapers should be changed every 3 hours to 4 hours depending on the age of the kid who is in diapers.
Older kids wet less often than younger babies.
Poop diapers should be changed every time you notice unless the child is asleep and poops during their sleep then it's okay to allow the child to sleep in a poop diaper.
Even pee during the night it's okay for the baby or child to sleep through the night in a wet diaper.
NO I don't change my toddlers diaper if they pee just a little in it or even just a few pees.
Disposable diapers can hold a lot of pee before they need changed and the diapers absorb and lock the wetness away from the toddlers skin.
Unless the toddler has a really soaked diaper and it begins leaking then the toddler will feel no or hardly any wetness.
I wait until my 2 year old son has filled his diaper up so that it becomes pretty squishy and when I change his diaper his skin is still dry.
I usually change my 2 year olds diapers every 3 hours when he is just wet and sometimes when out and about I have forgot to change his diaper and 6 hours later he is soaked but his skin is still pretty dry.
I just use a baby wipe and wipe his skin and then put a new diaper on him.
He has never gotten a rash.
With cloth diapers you need to change them soon after they pee because they don't lock the wetness away.
But disposable diapers contain a gel known as SAP which absorbs the urine and holds i t away from the skin.
If you changed a diaper every time they pee then you'd change diapers every 30 minutes or so.
I've changed my 2 year old sons diaper before and within about 2 minutes after the new diaper was put on he peed again.
I just left it on him until it got peed in some more.