One thing you will read here on the boards is we don't always no what does work but we do know what doesn't.
I would recommend doing what you can to help around the house and then try and not be home as often when your wife is around. Give her lots of space. Keep up a PMA. Fill your time with GAL even if it means taking the kids and doing something with them on your own.
I don't believe that there is zero emotional connection for your wife. If I was disconnected emotionally not even a vacation would help me to be intimate. She may be so overwhelmed that she allows her stress and resentments to push down any loving feelings.
Giving her space will allow her time to clear her mind and maybe even miss you a little. If she takes a step forward respond without jumping back into pressing her. Remember the cheese less tunnels
Me 52 H 44 T9 M 5 BD 12/11 H split 8/12 OW moved in 12/12 OW gone for good 6/14 We get closer again 9/14 SD 13 Me 4 Grown
Accept what is...let go of what was and have faith in what will be.