You are not responsible for getting the spark back in the relationship, he is. But first he will have to do a LOT of work and there needs to be a LOT of time. Timelines really don't serve a purpose but to put more pressure on an already pressured system. You call the shots now, it will be on your time or not at all.
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