Just wondering if your bub has a comfort item that they sleep with or not?
A lot of the sleep books suggest that you should introduce a comfort item, like a blanket or soft toy, so that bubs have it nearby when they wake and they can cuddle it to re-settle and go back to sleep.
If your bub has one, did they decide on the item themselves and how old were they? Or did you introduce it yourself and how old was your bub when you gave it to them.
My bub has trouble re-settling during his day sleeps (massive cat napper here!) and I'm thinking about buying a comforter to introduce to him so that hopefully he'll cuddle and snuggle into it when he wakes and can re-settle to sleep.