Longer sleep stretches

I’m afraid there’s nothing you can do until they’re ready, their tummies are just so small. If going longer in the day than at night then maybe try waking for feeds in the day to make gaps shorter then so they’re fuller for the night time but most likely just waiting it out!

Mine only started to sleep 5 hour stretches at night when I started doing his last feed before bed as a pumped bottle, He has pumped bottle sleeps 11-4am wakes for breastfeed then back down until 7:30ish x

I've found love to dream swaddle up swaddles have helped my baby sleep for longer periods of time he wakes about 2-3 times a night wearing them but if he's not in one we struggle to even get him to sleep let alone stay asleep he's on boob constantly