Is it as bad as I think it is going to be?

This is real life. Get used to it.I know...My life is the same way. Be glad that you both have jobs. Be thankful to have a beautiful daughter. Forget the small stuff. None of that really matters. You are right...you will be tired and you may not spend enough time with your partner or daughter. But remember working is the only way to pay the bills or to put food on the table. When possible,improve your situation. Go back to school,learn new skills. As for your worries as to if he will find someone else. Let that fear go. Hell at least he has a job. Your only concern now should be that of providing for your daughter.