BT, I'd just leave him completely alone right now. If he doesn't respond to L, the process will still move forward.

Is separation not a legal step in your state, before D?

M 16 yrs, WH62, P54
3 adult blended kids
EA 11/13, BD1 6/14
PA fall 14, BD2 2/15
Piecing 2015, BD3 12/15
Separated 4/16
WH moved OW in 5/16
Divorced 6/15/17