I can't believe a doctor would prescribe controlled crying at any age!
My HV supports pretty much anything I say I'm going to do.
I think there are some non negotiables like using a car seat and not leaving them in the bath but swaddling, cosleeping, dummies, etc have to be at the parents discretion otherwise you'd have miserable parents and miserable babies if we all stuck to the best practices.
I've been advised to not swaddle (by midwives) to not swaddle when feeding (by breastfeeding support workers - when swaddling was the only way I could get a latch without screaming as he clawed at my bleeding nipples) the same woman told me my three week old needed a vest, sleepsuit, hat, cardigan and blanket for every nap in August when it was 24 degrees indoors...
It take confidence to look at the "rules" and disregard them, but you have to do what works for you!