Looking for sleep training advice!

Me

Hey mommas. For those who have sleep trained, what method did you use?

I’ve nursed my little man to sleep since he was born (which I know is not ideal), and he was sleeping through the night at one point but now he wakes up 2-3 times a night & wants to nurse. He goes right back to sleep but the interrupted sleep is making me so tired all the time.

Any sleep training advice? Thanks!