What age did your LO start sleeping over at their grandparents house? Hubby asking for it to happen this year, but I feel my LB (1) is too young

Just looking for different people's thoughts on this. For me, I really don't want him doing overnights this young. He's still breastfeeding and I plan on doing this until he self weans or turns 2, whichever comes first. He is not a great sleeper and wakes frequently in the night. I want to be comfortable and confident in his sleep before considering a 'fun' night elsewhere. We are planning to have another baby but even in that instance, my ideal would be for my LB to remain at home so his routine doesn't change much.

It's taken me a very long time to have any time away from him at all, with so far him only being with the grandparents for an hour and a half whilst we had a date. It went well, but nights are a different story and not a bridge I plan to cross for quite a while.

I feel bad for repeatedly saying no when it's something he wants to happen but it doesn't seem to be appropriate for him at the moment, and selfishly I am faaaar from ready emotionally to have him away from me for that long. I am self employed, he doesn't go to nursery so I spent my days with him, going to baby groups and seeing friends etc. He will go to preschool in time, but that's not til 2027. I feel that this time is short, am I wrong for not wanting him to be away from me for long yet?