Responding to jealousy from 5 year old towards 10 month old

[Mumofboys16]

I feel like I'm getting it all wrong.

My boys have a lot of love for each other and they have lots of nice times together, but the 5 year old has times where he gets silly. E.g. baby will be playing on his own and DS5 will press is head on him/ climb over him/ roll him over, basically anything to interrupt the baby. This can happens lot, I start off all calm asking him to stop, encouraging him to sit next to the baby to play, try to divert him and do some 1:1 but he'll keep going and then I get cross.. which I know isn't helpful.

I make sure we have lots of 1:1, I try and take a positive approach, lots of praise. Activities like playdough, drawing etc are good as it has more structure, but the free play is where I'm struggling.

Can you help.. how can I react in these situations to diffuse DS5 rather than it escalate into an argument. Or is there different way I can think about it?

One thing I have wondered is I always give DS5 my full attention when baby is napping.. but does he then see it like I've dropped him when the baby is awake 🤷🏻‍♀️

Firstly I wouldn’t say this sounds like jealousy. It sounds more like a 5 year old being a bit silly and having selective hearing when told no.
is he actually upsetting the baby? Or hurting him?? Because that would make a difference.
I think it’s ok to be a bit cross if he if ignoring you, especially if the baby is getting upset.
Id go with firm and quick consequences. So warning and then follow through. Remove either him or the baby and then ignore any tantrums. He’s 5 and presumably at school so should be more aware of how to interact with others and consequences for poor choices.