@Isa thank you - yeah I've been involving him loads, and he's been absolutely great he loves the baby! I've also been able to keep doing bed time as normal at the moment..I think it's just postpartum hormones haha
Another thing is to make sure you schedule some one on one time with your toddler! It can make them feel good to know that they can still have time with you like they used to. If you are with your partner, have them watch the baby for a bit while you take even just 30 min -an hour to spend one on one with your toddler doing something fun together
Just try and involve him as much as you can with baby :) it's normal to feel as you feel but there is only so much you can do at a given time, especially when they both need your attention.. what I find helps is when baby cries (and I know it's not a life or death situation) saying something like "sorry baby, I am helping X now as it's her turn. Once we are done changing our nappy I will get there" which is what I would tell my toddler if I were stuck with baby.. :)