Happy to sit on potty at nursery and not at home!?

[StoneBaby]

DS is 20 months old (I know some people are going to say he's too young for potty training) and knows when he poos (he'll tell us) and wees.

My problem is that he agrees to sit on the potty at nursery but not at home

Should I worry or as he gets use to be on it at nursery and sees other children using it, I should not worry and hoe pthat one day, he'll sit (and use) the home one?

I think no need to worry at all. Its good he'll sit on it at nursery - I think my daughter went on at nursery first, probably at about the same age. She just sat her toys on the home one and said 'ssssss' . I wouldnt make a big issue out of it though it will just happen.