Detaching with kids is a bit different, no doubt. Detaching is very much emotional as physical. It's not going dark. It's not disappearing or cutting them out. It's about detaching yourself from them so that emotionally they are not controlling your thoughts or feelings nor are you allowing the situation to.
I got the "we have to have something to talk about" connect directly from your post earlier. In response to that, the 7pm FaceTime for your son is awesome. For sure! Glad he's keeping to those for your son, however, detaching is keeping it to the son. Not about what H is doing or you are doing or with who or what's going on with the investigations, etc.
How will he know that you are detaching when you already don't see him or talk to him over a day? When you change how accessible you are and how those 7pm calls are handled. Perhaps you may want to look at beginning to remove some of the financial entanglements as well. Cell phone bill he chose. What else is possible as to not force conversations?
34, xw33 M-10, T-18 2D (8 and 5) Ilybinilwy-1/16 EA/PA- 7/15-present (with my former best friend) Trial apartment-2/16 (also when she considers us separated) W moved out-8/16 W Filed 11/21/16 D final 1/30/17