Sleeping tips almost 5 month old?

Right now he’ll only go to sleep if he sucks his pacifier and as soon as he’s asleep it falls out his mouth.

Last night it was bedtime 8.00pm, awake 11pm, soothed with his pacifier a few times as it would fall out when he wasn’t yet back asleep, 4am feed, awake 5.30am for pacifier and up at 7.30am.

He’ll suck on his hands and fingers and make little noises and groans while getting to sleep but 5 minutes later he’s crying for his pacifier for the final bit of going to sleep.

What can I do?