Have you talked with your wife about this? Maybe sit down with her, tell her what's going on, and discuss the options and possible outcomes with her. If I were her, being part of the decision would make me less stressed, like we are in this together. If you can, I would also offer to arrange help for her while you are away (if that's what you choose to do). I don't know your situation, whether this may mean leaning on some friends, family members, other parents, but anything to take some of the pressure off your wife (and you).