Massive step back please help

[Eleast]

I could do with some input. My son will be 3 this month, I started introducing the potty back in April, I have a 1 year old so did it slowly as there was a lot going on. By the end of July I was getting fed up of not making progress and went cold turkey on daytime nappies and got a sticker chart. After a couple of weeks he’d clicked, rarely had an accident unless he got really distracted.
But this last month he’s been all over the place. Today by the time it got to 4pm I put him back in a nappy I’d gone through ten pairs of pants, he’d pooped himself twice which he rarely ever does. In sept his dad was in hospital just for a couple of days and I know it upset him (since then he has ended up in our bed every night). This has meant he’s tired a lot, he doesn’t nap and he’s restless at night. He’s had a couple of colds which haven’t helped. But I just don’t know how to get it back on track.
Yesterday he had no accidents at nursery at all, but when he’s been at home all week it’s totally off track. Anyone have any advice? Is this normal?

[CaptainKirkssparetupee]

Very normal considering the circumstances. pick now if you want to go back to nappies for a while with a clean start, use pullups or press on with undies, what ever you choose stick to it and don't chip and change as it will confuse him.
When he had an accident calmly tell him next time he needs to try and get it in the potty, make clean up as boring as possible and get him to help as much as he can.