Following because I’m in the same boat!
@Jenn Pm me as well :)
Firstly, you have not messed up his sleep. Supporting your baby to sleep will not make them sleep worse (I’m a night nanny and this narrative of creating “bad habits” needs to change). I would love to help for free to gain more experience. I have been a night nanny for years and also helped several friends with little tips in changes of routine but have recently taken a refresher course and would love to expand to more sleep consultancy work hence wanting to gain further experience. Let me know if this is something that would interest you and I can send you a sleep diary to fill out for the week x
I have some advice, feel free to DM. I’d feel more comfortable that way :) my son is 16 months btw.