Previously been in similar position as you. Baby with severe reflux needed motion sleeping. Once reflux was under control baby was dependant upon sleep "crutch" of rocking or car/pram to get to sleep. Baby woke multiple times during night and only napped for 30 mins at a time.
Hired expensive sleep consultant who basically did two things 1. Set up process of weaning Baby off rocking, firstly by patting and shussing and then shussing. It wasnt exactly cry it out as you are with Baby whole time but did take up to 1hr of crying first time Baby was patted to sleep. Baby did eventually learn to self settle but lots and lots crying to get there
- Improving sleep environment...white noise, sleepy bag, black out blinds, best nap gaps for age group etc
Did this help....yes massively...Baby's sleep improved...started napping for 1.5 hrs and sleeping better through night maybe only waking once or sometimes not at all. However for us this only lasted a relatively short period ...a few wks ...the next tooth or cold my LO would be knocked off and we would be effectively starting again. And repeat.
I went through a period of being obsessed with self settling...OK giving my LO a break if he was sick but as soon as he was better applying the sleep training guidelines until he cried himself to sleep. Frequently this could have been 30 mins plus of crying a night.
My LO would go phases of going down ok and phases of fighting sleep. He never really managed to stay asleep straight through much but maybe only waking.
One particularly bad night of over one hour of crying by him and some of me I thought I can't do this anymore.
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Our LO is now 2 yrs old and no longer self settles at all . He will only go to sleep by being told a story. He still wakes up once in the night but will go back to sleep if I'm on tje room . It's not ideal but it is manageable.
Some children are worse sleepers than others in the same way that some adults need more sleep than others. My LO is extremely active and needs a long wind down process before bed.
I'm glad I did use the consultant as I would have always been wondering was there some great secret i was missing....but there wasn't. Also she did give me lots of support in terms of nap timing room set up etc.
I have become more confident as as a mother I've realised that sometimes one size doesn't always fit all when it comes to sleep
Good luck I hope you find something that works for u