My son 3years and 5months in age has been completely toilet trained for well over a year including during the night. He does not need reminding or prompting to use the toilet and very rarely wakes up during the night to use the toilet (he generally waits till the morning but some times he will get up and use toilet)

In over a year I would say he had one bed time accident and twice in day and never since/after.

However this week on three separate occasions my son has wet the bed.

I’ve woken him up (we cosleep) as he is soaking wet (he hasn’t even realised he has wet the bed).

He isn’t ill at the moment, no major changes in life so I’m very confused and concerned.

He isn’t drinking more than usual and he always has a wee before bed

Any ideas suggestions