Squirming, arching back & crying before sleep

[Nightowly]

My 4.5 month old will seem pretty happy, comes to nap or bed time, if I put him into a position to rock him to sleep he immediately starts squirming, arching his back like he’s trying to escape my arms. He will sometimes settle and close his eyes then after a minute will squirm and kick again.
Crying accompanies this each time.
is this normal?
I’ve read various things about what it could be:

• over tiredness
• hunger
• not ready for sleep

Im struggling with him getting overtired but waking early from his naps, possible the 4 month sleep regression?
The squirming and crying when trying to sleep has been at its worse since about 3.5-4 months old.
It’s Not nice seeing him distressed trying to settle, I hope he can just relax and nod off calmly at some point!
I take him upstairs to a dark room, away from distractions everytime

Sounds like wind.

Mine was exactly like that from 6 weeks old until now pretty much she is 14 weeks she caught her sleep every time nearly had a nervous breakdown she had very bad wind as well though . Might be worth trying g some infacol and see if it helps . Just don't over do it we have it with every bottle and it made her 100 times worse so now we give it once if we think she needs it.

Only do one intervention a week and see what works over a period of time. I'd try this first.