I gained around 15kg, less sport more food, my daughter is now 1 year and I lost 18kg the last 5 months through diet and sport. That said it takes some discipline, you'll have to get used to a shedule together with your partner. All my private computer time is now past 20h when my daughter is asleep, training time is after work switching each day with my gf. Dont worry you'll get alon