Hi OP I actually know how you feel. I was you. It was horiffic.
My action plan, take what you want from it:
Look up histamine reaction.
I'm not saying baby has an allergy. But some people are very sensitive to histamine in foods, or foods that create histamine.
We were giving DD a lovely bowl of mashed banana before bed.
No no no NO
Switched to natural yoghurt and honey. She could actually drift off to sleep. Histamine reaction keeps the brain from switching off.
Kept the no banana after lunch for at least a couple of years.
Our DD is now 7. She still struggles to fall asleep. How many times did I press the button on Shawn the fucking sheep I do not know.
I escaped a couple of times for 1 night. One night of 6 hours is very restorative. I found I could function on 4 hours sleep in 1 block. Any less is horiffic.
Do you have anyone who can help? One night my DH cuddled DD basically all night as she yelled in annoyance as I actually collapsed with tiredness.
You need support. Any relative or friend who can help? If not employ someone if you can.
We didn't think CIO would work as she just couldn't drop off. But I totally understand if you are at this point.
Big hugs
I know how tired you are.
I used to feel like my body was blowing away into sand.
If I can help you in real life I would. Someone to cuddle baby while you sleep, baby is safe even if not asleep.
Hang in there. You are tough. It is all a phase, Even if this is a really awful one