Ok so my boyfriend and I have been together for nearly 4 years and we have a 10 month old child and we moved in together when he was born.

I wouldn’t say our sex life changed majorly after having our child but lately it’s become extremely unsatisfying for me and when I talk to him about it he tells me once he’s done he isn’t interested anymore or interested in my needs because I can do it myself when he isn’t home .... I don’t really know what to do about it in his mind our sex life is great even after I’ve told him I’m not satisfied and it’s not fair that I should have to do it myself he should want me to be as happy as he is

Please give me some advice on how to approach the situation so he will listen to me ?