I agree with the PP - EASY is very flexible, however at 8 weeks, your lo does still need to be fed on cue. You want to make sure that she gets most of her calories during the day, to try and eliminate your night wakings.
It may be easier to try and schedule your appointments etc during nap times where your lo can sleep in her car seat.
HTH
Keep us posted and let us know how you are getting on.
Paula x