The routine BW encourages is that you have regular cycles of feeding, a bit of play time appropriate to the lo's age, then sleeping. It doesn't matter if while sleep training that you might have EASASE or some other variation. Basically, you want your lo to feel secure in knowing what is coming next throughout the day. You want to guide him while still watching for his cues into a more predictable pattern throughout the day. It won't all happen at once. Keep at it, you'll do great!
A tip would be that for his age, he can probably handle 1.5-1.75 hrs of A time, so he will need a nap after being awake that long each time. So, if he, for example, eats at 7 am, he'll want a nap by 8:30/8:45. If his nap is only 45 mins and you can't resettle him, then he's up at 9:15/9:30, feed between 10:30 and 11, quick change or cuddle so that you then put him back down awake. I realize that the typical A time isn't all coming after the E, but that's what happens with short nappers. Tracy stressed that while sleep training, continue trying to resettle as long as you have the strength for without overly upsetting the lo or until the next E time, feed, very quick A time, then try for the nap again. Still, you'll need to continue working on extending the nap again, or you might have 2 S periods before the next E. However, I will say that some short nappers stay awake from the end of their nap until the next E and another full A time period. It just depends on your lo's temperment and sleep requirements.
How's his night sleep? Can you lay out the routine you had today?