You could put the baby in the sling/carrier, makes it much harder to hand them over x
Just say no to them coming round I have done with with both my children I’m not bothered if I offend anyone lol
It was my dads 60th birthday party last night (couldn’t really not go I’d be a shit daughter lol) and the amount of people asking for newborn cuddles stressed me tf out. We’re going through fussy evenings atm and I’m exclusively breastfeeding so whenever he let out a little whinge I was like ‘ohh he wants mummies milk’ 😂 they kind of had no choice but to hand him back over
Just make an excuse - "do you mind if I don't? He/she's quite unsettled today". No-one reasonable would push on that and they'd be v rude to, so you can feel free to just be blunt to them after that if they do x