Husband told me I don’t need sleep

Me and my husband got into an argument recently about how he works out of town a lot so he gets a lot more sleep (he stays where he works a few nights a week). I told him I’m exhausted from having a 3 year old and 4 months old by myself and never having help because he works so much. He told me that sleep is not a necessity for my job as a stay at home mom but it is a necessity for his job. I feel undervalued and unappreciated. He doesn’t understand how much work it is to take care of 2 young kids everyday by myself without a break and getting little sleep because of the baby. I don’t even know what to say to him. Any advice?