My dd2 (4) has always co-slept with her sister (9) through their own choice, but now the older one wants to sleep on her own which is fine except dd2 won’t go to sleep on her own. I tried putting her in with me and dh but she doesn’t like it - he’s a rugby player so rather large and she tends to get squashed! So I put her in her own bed and she cries for hours until she falls asleep, but now she has worked out if she lays quietly and pretends to be asleep until me and dh have gone to bed she can get up and get into bed with our Dalmatian who’s bed is on the landing (he won’t sleep downstairs on his own🙄) so every morning for the last week I have found her curled up with the dog and her blanket, I mean it’s pretty cute and I have no safety worries as he’s a very gentle dog but it’s pretty weird and can’t be good for her posture?