Welcome!
Most of babies this age are efficient eaters and finish their nursings in less than 10 minutes. Are you sure yours is a snacker? Maybe she just likes to nurse often for comfort, not because of food. Mine was such.
Anyway, with a transition to EASY, do you see any pattern in your baby right now? How often does she need to nurse during the day? How many naps does she have? You can try to incorporate some of this into EASY to make it easier on her, babies don't like changes, especially when they are sudden :lol: . Tracy suggests to be flexible and it helped me enormously, as not every baby is the same, you need to listen to her needs. Use EASY as an example but don't get stressed out when things don't go smooth at the beginning, for us it was really not easy. I found out that it was much easier for everyone when I was not set on achieving a perfect schedule every day.
I suggest you start with a day routine. Don't try everything at once, it may overwhelm her and you too. Maybe stick with naps first and try to stretch the feedings during the day. Then when she is doing better during the day, she may start going longer stretches at night. I think, personally, that if you want her to sleep better at night, you need to teach her how to go independently to sleep, at first. Besides, it is the most difficult thing for some babies to learn.
Good luck!