If you could sleep train again, what method would you use?

What it says above really. I’m about to start sleep training my 4 month old and I’m a bit lost with all the options. What would you do now with hindsight of what worked or didn’t for you?

LO sleeps fairly well (typically 7pm-7am with two wake ups and 4 naps 45mins each (1.5/2/2/2) unless I do contact when we go to 3 naps with one longer) but cannot go down awake so I’m rocking/bouncing for all naps/bedtime and I’m exhausted. Recently it seems like she’s fighting the rocking so I think that means she’s ready to fall asleep independently? But if I put her in the cot awake she will fuss/thrash about with no sign of ever stopping and eventually start crying (tried fuss it out for 15mins a couple of times with no success). If I put her down drowsy but awake I can occasionally get her to sleep but she’s has to be mostly asleep to get there.

There seem to be so many options, all of which I’m sure she’s going to hate, so I’d love to hear any advice and what worked for you/what you’d go for now with hindsight in play