I am a total control freak and struggled a lot in the beginning with my son because of this. I kept thinking that things should follow a certain order and he should do things when he was "supposed" to but that is impossible to expect. One thing that helped me was when I finally realized there isn't always an answer for what my LO is going through, especially at 2 months old. I tried to blame 4 month wakeful, growth spurts, etc but sometimes there isn't an answer.
My LO is almost 10 months old now and things STILL change almost daily. No 2 days are the same, even at this age. I don't have any stellar advice for you except to try and relax and let go a little. At this age, let her eat and sleep when SHE wants to, not when the clock says she should. Some days she will sleep more or sleep less and eat more or eat less, just let her do her thing. I found that things didn't level out with my LO until 5-6 months old. Good luck to you :)