I would echo what everyone else has said. Stay the course Stella. Do not get sucked in or adjust your plan with the hope things are falling apart on their end. Even if that is the case, don't assume that will mean he would want to be with you. Your H could easily move on to OW#2. That has happened to a number of people on here. So please do not sit around hoping he will get tired of Plan A and come running back to Plan B. Do you really want to be that person? The one he returns to because it is easier or cheaper or whatever? Do you want to be the person he can live with or the person that he can't live without? If you let him waltz back in, I guarantee you that he will think of you as the former and not the latter.
Please, please, please... learn from other people's experience on here. If things do fall apart and he wants to "come back home", do NOT... I repeat... do NOT welcome him back with open arms. Yes, you would immediately feel better and things might be good for awhile but if he does not do the work and start seeing you as Plan A, he will inevitably find OW #2 or rekindle things with OW #1 later on and leave again. If you want to recon, that is completely understandable but you need him to work for it.
In my sitch, I had BD #1 three and a half years before BD #2. After BD #1, my H spent five months living at home ignoring me and minimally interacting with our kids and than another month living in his friend's garage suite (he says) before returning home out of the blue and declaring his crisis over. I welcomed him back with no questions asked because I was so relieved to have him home and sounding like my old H. And while I believe he genuinely wanted to come home at that time, it didn't take long for his issues to resurface (unbeknownst to me) and he found a way to basically abandon me and our children for three more years before BD #2. I mistakenly thought the crisis had passed but in reality, it was only just beginning. So please don't make the same mistake I did. If he truly wants to come home for the RIGHT reasons, he will do the work he needs to do before you let him move back in. If he doesn't, it just means he wasn't serious about it in the first place. (((HUGS)))