I would feed then see if he wants to go back to sleep. If he wakes up earlier do you find he has a longer first nap? Is he cranky or does he seem up and ready for the day?
DD is 5.5 months and we have worked on self settling with a sleep consultant, as feeding to sleep was no longer working. We are 3.5 weeks in now and she isn’t fully self settling yet but she is doing so well, she actually self settled this morning for the first time, after I put her down v drowsy.
this is what my sleep consultant told us to do:
Start with putting him down drowsy after rocking or whatever you do to get him to sleep and then put your forearm on his legs quite firmly so he feels contained and safe, then rub his belly clockwise with your other hand, or just settle your hand on his diaphragm area. We found that DD only likes the hand on her legs so that’s all we do now.
Then repeat a saying in a slow, even voice eg. “Sleepy time (name), good boy, sleepy time”, alternate with taking a deep breath then Shhhh’ing on the exhale, or singing, whatever your DS likes and responds well to. When he cries, which he will as he’ll protest against doing something different, make your voice louder so he can still hear, then when he’s quiet you can go quieter. He may cry for 20 minutes (first stage of sleep) but should quieten after then. If you can have your partner in the room with you so they can take notes on how long DS is crying for etc, then you can see an improvement each night.
When he is asleep stay with him for 10 mins so you are there if he startles himself awake, if he does just repeat what you did.
It involves crying but isn’t like CIO or Ferber in that you aren’t leaving the baby alone. It has worked really well for DD and now crying is minimal, I hope this lasts!