Hello Hon! Quick answers to your questions:
- no, it's not too early for easy:) but remember that easy is not a schedule but a routine of eating-activity-sleeping
- feeding every 3h would be better and even with formula I would stick to 3h feeds to motivate her to take more calories during day
- independent sleep is a great thing and you already can start with a shhh-pat method; it will means a lot of your assistance but it pays off later and instead of a proper sleep training at older age which usually means more tears you have a baby who you assist less and less when going to sleep
- I don't know where is the problem with sample routine...

normal it would go like that in the evening:
4pm waking from a nap and feed
Between 5 and 6 nap of 45min
Another E around 7/7:30pm, you can do it before or after bath or so a split feed between and after bath