Hello Brazylia,
With our first child we followed EASY religiously and things went really well, I must say. Our son is now 5 years old. But with our daughter, we've not been doing EASY since she started daycare about two months ago. We try to be as consistent as possible with naps and eating. And we do try to keep everything calm for one hour or more before naps or bedtime. So to answer your question, our day more or less looks like this:
Wake up anywhere between 6 to 7:30 am
Breakfast 30 minutes later
Snack mid morning
Lunch 11:00
Nap 12:00 - Sometimes for 30 mins, other times 1hour, or 1,5 hours, or 2 hours. If she has a short nap, she sometimes goes back to sleep with some shush/rub. To get her to sleep we often need to keep a gentle hand on her back (so she won't get up) and shush.
Supper at 5 (on daycare days it's at 6;15)
Bed at 7:30.
Our winddown consists of going around the house saying goodnight to the rooms, then change diaper, read a book and sing a lullaby. Luckily, she usually goes to sleep with very little fussing at bedtime. I wish I could say the same for naps.
I used to breastfeed her in bed in the morning, and like your ds, she used to go back to sleep (most of the time). But then she started not being able to drink without her teeth getting in the way. I tried for several weeks, but it was just too painful, so I stopped breastfeeding. Now when she wakes up after 6, I just get her up. Before 6, we do PD and shush to get her back to sleep. It often takes 1 hour - but she does go back to sleep. I usually end up getting her up to give her a sip of water and we sit on the couch with a very dim light for about 15 minutes. After this she's usually ready to go back to bed. I make a point of not giving her formula in the night - of fear she might get used to it.
Did you change his bedtime? Sometimes when we put her to bed earlier she seems to have a better night sleep, and she even sleeps longer sometimes. When we put her to bed later, if often backfires.
We've also noticed that if she laughs a lot anywhere after 4pm, it seems to overstimulate her and she wakes up more often in the night. So now we try not to make her laugh too much during the day, which is sad I know, but we keep the giggles for the morning and early afternoon
Of course I would recommend trying to cut out the 4:30 feedings (or anytime before getting up time), by trying to give him more during the day - maybe even a small cluster feed before bed.
Good luck and keep me posted!