Sleep trainer for a 4 month old

[Cinnamon84]

Is there such a thing?

I'm losing it. Ds has had about 20 min sleep in the last 5 hours. Am manically rocking and patting him in the sling. If I go into a dark room or try to put the hood up he screams until he goes bright red and sounds like he's choking.

Have written several other posts as NOTHING helps him sleep apart from the sling (but not without crying first).

He's overtired now but he wasn't 3/4 hours ago. None of the following work:
Pram- he cries and won't sleep even on an almost 2 hour walk with a dummy
Car seat- screams his head off
Dummy- doesn't seem to do anything
Bouncy chair
My rocking chair
Swaddling
Loud white noise
Light show
Dark room
Feeding to sleep- tried this earlier and he fell asleep (yay!) for about 10 mins then woke up smiling at me.

I must be going wrong somewhere, it's like this everyday and can't see it improving

Oh sorry also, my son was so hard to get to sleep in the day. He needed almost complete sensory deprivation and white noise. I had to pay his bum for (what seemed like) hours to get him to sleep.

But, we got there, after many ups and downs!

Of course he's tired if he's rubbing his eyes and yawning.

Op I have been there with my baby. At 9 mos he's a brilliant napper but he was awful at 4 months. I'd say his naps didn't really become any good til he dropped the third nap at 6.5 months (which I think is quite early to do so)

What worked for us at the stage you're at was rocking him in the buggy with the snooze shade over the top, in a dark room, with LOUD white noise. And I do mean loud. Think of the sound of the water while you're in the shower - that sort of volume.

I'd also be aiming to put him down before he shows tired signs. At 4 months I'd expect not much more than 1hr20 awake time.

Oh and also don't worry about negative sleep associations - for naps it's really fine to do whatever works. Honestly one day it was like a switch flicked for my ds - after months of utter cot refusal and only napping in the buggy, I tried to put him in his cot one morning and boom, he turned over and was asleep for 1.5 hrs. Now he does that twice a day every day.