Hi hun sorry your still going through this, it's soul destroying when you just can't figure it out. If it's any consolation our worst sleep with DS was 14-17 months....BT messing, taking an age to fall asleep, having to sit cuddling or rubbing his back, NW that I couldn't work out so lots of sleeping on his floor. Can honestly say not sure what fixed it but it did stop, I'm sure it was a mix of SA, teeth and developmental.
I'd say your day looks pretty good 13 hr day and 2 hour nap was how our day looked at this age. Does walk in walk out calm him?
What time BT did you go for?xx