I've read up until poss 8:39
When it comes down to it, it's them or you. For us, it was us, me and DH where we'd reached the end of our tether(s) with DS1.
The first year of his life was the worst of our lives. He cried and cried. No medical issue we ever found (consultant paediatrician, Oz). But. We'd had enough.
So aged 10 months, we did (I won't apologise for the terminology) controlled crying. It wasn't easy, but it took 4 nights.
Four.
Family life has to work for everyone. Ours had become untenable.
So we acted.
You have to be at the end of that tether in order to stay strong, but it worked for us.
FTR, ours was 1 minute; still dark, pat, pat (in the cot, no pick up); no eye contact, no talk, leave.
2 minutes, pat, pat, no eye contact, silence, leave.
5 mins, repeat.
Asleep by 30.
If your DH is resisting allowing crying, make him do it.
I'd like to say it was horrible, it tore into the very soul of me, etc; but it didn't.
I/we did what was necessary for the whole family. DS wasn't in pain or undue distress. He just wanted, understandably, continual company and stimulation.
That wasn't possible.
So we did what was necessary.
Thankfully, his sleep patterns have settled now, given that he's 24.....