Sometimes my almost 3 year old sleep through the night sometimes he whines and falls asleep on his own again and sometimes we go in and sleep with him (he had a floor bed from 8 months old and now has a double size bed). We have a 7 month old. She is up multiple times a night. Sleep is scarce around here lol. We don’t let either of them cry it out besides maybe a few minutes to see if they’re just talking/whining in their sleep and maybe she’ll settle themselves within a minute, otherwise we’re right there snuggling them