how much does your SO help you

Moms do you get help from your SO to watch the kids/babies? I'm home alone all day with my 9 month old my husband gets off at 4-5 but doesn't come home till 7-8 Bc he's out helping a friend or just at his moms with his dogs or idk wtf he does. Anyway he comes home tired from work so he doesn't help me much and he says he's so tired and since it's around 7-8 that's almost bed time so he says he needs to sleep early for tomorrow. I'm stressed I get no help and we live out in the country with no ride. I'm going crazy. Should he be helping me more or is it ok that I let him rest