S.H.
Anytime, a baby hits milestones and new motor-skills... and is teething, this will tweak their sleep.
It is involuntary. They cannot control it.
This is how they learn their new skills. And they do it, repeatedly and even when supposed to be sleeping.
They do not yet have the 'at-will' cognizance, to stop or make themselves all into a comfy little sleep position, again.
It is a developmental phase.
It will pass.
Just have to be patient.
They WILL,roll-over repeatedly. Then when they learn to sit-up and stand-up, this will occur, again. Them doing it repeatedly and always.
They do not yet, 'know' how to roll-back over, nor to premeditate that, nor to think 3 steps ahead in how they will roll-over then roll-back over then go back to sleep. They have not gotten there, yet, developmentally.
Every time a baby changes developmentally/cognitively and in their motor-skills... it will tweak their sleep.
And they cannot yet, put their pacifier back into their mouth.
They don't, have the coordination for all of these things yet.
But it is normal.
Your baby is developing well and normally.
It is a happy thing... because if he were not doing these things... then you would worry about delays.
So that is the flip-side, to this.
He is too young, to have the prehensile coordination of his hands/fingers and hand to mouth cognizance... to do it himself. Just put it back for him.
I did, with my son. It will wake him and you. It just is.
It is a phase.
But your baby is gong through a GOOD and normal development of his motor-skills. He is just not coordinated at it yet. These skills, are NOT yet fully 'mastered' yet. It takes time.
MANY things going on in a baby, developmentally, at the SAME time. It is hard for them too.
It will pass.
MANY other phases to occur.
Sleep patterns in a baby, is never static nor finite. It changes. Per development, per hunger, per teething, per age.
Also, whenever a baby/child is on the cusp of another age-juncture, it tweaks them and their sleep. Due to their changing development/motor skills/cognition.
It is ever, changing.
Which is good.
It means he is developing.
Just feed him on-demand, 24/7, day and night.
A baby when developing and growing so much, needs more intake. Sometimes, a pacifier, will deter from a baby getting adequate feedings. So, know when he is hungry and needs a feeding, versus just putting the pacifier in his mouth.