A lot of your post really resonated with me. My WH checked out after desperately trying to get sex/physical affection with me. I was so tired after a long day at work and then handling the bulk of the child care evenings. I still wrestle with my resentment occasionally but overall I have set our R aside and like you, focusing on rebuilding our connection. It seems to be working.
M 10yrs T 13yrs BD #1Oct 2015-PA between WAH and COW BD #2 April 2016-WH resumed PA, she broke it off Jan 2 2017 WH says he wants divorce April '17-Letting go 2018 D busted DD8, DS6, DS3