Ferber method help!! QUESTIONS!

I’m thinking of starting the Ferber method on my 5 month old. He is waking every 2-3 hours, and wants to be nursed to sleep (BF), as well as sleeps with a soother.

What can you tell me about the Ferber method? Did it work for you? Roughly how long did it work? How do you know if your baby is waking because they are hungry or they are just used to being rocked to sleep? (That’s where I’m having a LOT of trouble...I feel horrible for letting him cry it out if he’s hungry...)

**do you still do the same wait times for the middle of the night when baby wakes up? Or just when you’re putting them to sleep?