Toddler won’t leave Baby alone

Em

My 23 month old son absolutely adores his 8 week old brother but is just a little over enthusiastic about his love towards him. He constantly wants to cuddle and kiss him... but doesn’t realise that climbing on top of him and squeezing him really hard isn’t a good idea (and gives me a mild heart arrack). He’s not being nasty at all, he’s just too young to really get it! Any ideas how to cope with this? I’ve tried lots of positive comments of what he could do that is a big gentler, and being clear at saying no... but in a nice way... Thank you!