U

fit in

verb

(tr) to give a place or time toif my schedule allows it, I’ll fit you in
(intr, adverb) to belong or conform, esp after adjustmenthe didn’t fit in with their plans

Also, fit into. Provide a place or time for. For example, We can’t fit in another appointment—there’s no time, or That tree won’t fit into the hole you’ve dug. [Late 1600s]

fit in with. Be suited to, belong. For example, I just don’t fit in with this group, or Her mood fitted in with the sad occasion.