Hi Melanie welcome to TBW
The EASY concept is a great way of learning to read your LO's cries and cues. If you follow easy; (as Rachel says) Eat, Activity, Sleep/You time, it means that you know that if you have just fed your LO half an hour ago and she is crying again, the likelyhood is that she is now tired - because you are following a pattern of E A S/Y throughout your day.
I can see from your other post that you have just sorted out some bottlefeeding problems as well, so at least that will make it easier for you if you want to start on the EASY routine. I have had my LO on EASY since birth and I would have been lost without it, because when your tired one cry sounds like any other.
How often can your Lo go between feeds at the moment? I wouldn't worry if your Lo only stays awake long enough to Eat, get a nappy change and clothes change then falls asleep again. Another aspect of EASY is teaching your LO to fall asleep independantly & not feeding to sleep.
Let us know if you want to start EASY and we can help you further, in the meantime if you want to get a quick overview see thislink -->
https://babywhispererforums.com/index.php?topic=60371.0 - Need help starting EASY with a 4week old.
You can also see a sample of EASY routines here for 0-3months -->
https://babywhispererforums.com/index.php?topic=10384.0HTH's