This might get long but please read .. also no negative comments , that's not what I'm here for .

So, I'm 15 and I have a two month old baby. I'm still with her dad who is 16. We've been together for two years. As of right now, he stays with me every night since he has school and work and can't help with the baby during the day, he helps at night . When I first had her, he spent the night but only went home 2-3 times a week. That was hard and unfair on my part because I'm not a single mom to be living like one . He used to say "I need to go home to catch up on sleep" "I miss my mom" " I need to wake up early " .. stuff like that . Now he says he's gonna start going home again on Sunday's so that he can get enough rest and a good start to the week. I don't know how to feel about it . I feel like it's unfair. Where's my good start to the week ? Where's my rest ? Where's my night off ? How do I put my foot down ? I don't know what to do please help :((