How often should boyfriend help with baby?

lauren

So I’m a stay at home mom about to go back to school and my boyfriend works part time about 25-30 hours a week. Since he works, I try to care for the baby( 3 months old) most of the time without asking him for help. I do almost all the feedings, nighttime included, almost all diaper changes, bath time, laundry etc. He holds her about an hour a night so I can wash bottles or if I need to use the restroom/shower but that’s pretty much it. Should he be caring for the baby more even though he works? I feel bad asking him for help but sometimes I feel like a single mom and I’m tired. How often do y’alls boyfriends/husbands help out?