DS is 14 months and has slept in our bed since birth. I'm due to go away for 3 nights next week, and am nervous about how safe it will be for DS to sleep next to his father when I'm not there.
All the information I'm finding about cosleeping unsurprisingly focuses on newborns - and is quite consistent that it's safe to bedshare with a breastfeeding mother, not the father, not a heavy sleeper and not someone very tired.
DP is most of those things (plus overweight though we have a futon so there's no risk of the bed sagging for DS to roll into him IYSWIM), & might in addition be tired if DS takes a while to settle. But I have no idea of whether they matter now that DS is older.
DP is very dismissive, and thinks I'm making a fuss over nothing. I think he's looking forward to cuddles as DS normally sleeps on my side so he feels he misses out. But I don't want to risk it if it's not safe.