Sexually Frustrated!!

I'm writing this as my husband is lying next to me snoring his head off. It's unreal how sexually frustrated im feeling at the minute. My sex drive has gone on a high since after iv recovered from c-section. We have probably had sex 4 times in 4 months of which twice he has finished himself and left me hanging. I'm so annoyed and feeling "sex starved" by my husband. 9 out of 10 times, I sort our son out for bed and usually it doesn't matter if I'm tired I make time for us but lately I feel he isn't making the effort for "US" anymore and it's really getting me down. He currently works during the week so he leaves at 6.45am and isn't home till 5pm and has recently started working voluntarily over the weekend too. In the new year they are changing his shift to 2pm-10pm and he works an hour away which means things are going to get harder after new year. I feel like I'm having to literally ask if we can have sex tonight and if I know he doesn't want to, he either laughs it off or makes an excuse of having a headache. We have been living and been together for 6 years and married for 1. I understand he works during the week and weekend but I don't want work affecting our relationship as I know sex isn't everything but he doesn't even make time to sit down and cuddle or talk like we used to. Any advice would be much appreciated or if anyone else is going through a similar phase 😣