Have you noticed a routine yet? As in is he going around the same time every day? If so, you could try putting him in the bathroom for a bit around that time (assuming you’re at home then).
Alternatively, you could try establishing a routine with him. So place him in the box when he wakes up, after meals and after his night time sprint
. These are the most likely times they need to go.
When he goes, is he scratching the spot before and after or just squatting straight away? Not sure if you have, but when you put him in the box, move his paws to gently scratch the litter.
He will get there, cats tend to be quite fussy about where they go, where they eat etc he’s just finding himself. They learn from their mum, so if he hasn’t you will need to be mum for a while!
I’m not sure if he’s too young yet, but some cats like to leave their poo uncovered to scare off other animals. If there were other animals in the previous home, he could have learned this. My nans cats don’t get along, and one of them sometimes poos in the doorway of ‘her’ room when they’re alone, I think to keep the other one out lol.
He’s such a sweetie, though.