3yr old a big man at school and a baby at home!

[princessna]

Hi all
My 3 yr old DS has made good progress with toilet training - at his nursery. He referred to as the 'king of toilet training' by his key worker. He takes himself to the loo and has done a couple of poos. He's been in pants for about 2 months.
At home we are struggling (not so much when he's with the nanny but when he's with parents). He wants to be a baby like his little brother (1 year old). We've done the star chart which is going OK for wees. But when I try to incentivise with a gift (latest was Thomas socks) it seems to have opposite effect - i.e. he wees in his pants on purpose!
Any ideas on how to encourage him when he's at home?
He is a clever little thing and will do (or not do) something when he sets his mind to it.
Thanks

[Nevercan]

I just emphasis the fact that they are big brother/sister now and only babies wear nappies - seems to do the trick with mine