Don't be too hard on yourself. You are not even 5 months in yet.
I remember back in February my wife my W took the kids to California on a trip w/o me for the first time. I was enjoying my alone time for the first 5 days. Day 6 comes and I don't know what happened but I went to the floor sobbing uncontrollably for like a half hour. It literally came out of no where.
I haven't shed any tears in awhile. I am sure I will we she moves out but it will be about the kids.
I have no feelings for my wife right now. I miss the family unit and the things we all use to do together but that's it.
I talked to my wife's cousin at my daughter's football and she commented how happy I look and that my wife doesn't seem happy at all. I think the stress is starting to get to her regarding the reality of everything. Last week we were discussing the D and she said to me "you will pretty much be putting the kids on the bus every day" I said "uh no I won't, only the days I have them". She honestly thought on days she had them and she worked that I would come over her house and put them on the bus. She said "your not going to do that for me" my response was "ummmmmmmm.... no that's called marriage"