What can I do to spice things up in my marriage?

Okay, so my husband is 30 & I am 22. We’ve been together going on 4 years married 1 year. When we got together he had already had my now 10 & 5 yr old step sons from 2 different relationships. We have a little girl who will be 1 on Valentine’s Day & Just found our we’re expecting again (I am almost 10 weeks).... so my rant is, lately I just haven’t been wanting to have sex. I’ve been tired or just not into it and he’s just a complete horn dog (he’s always been like this). He Wants it every night, but most of the time its impossible to give him any due to our daughter sleeping with us and she just has to be laying on me....and by the time she’s asleep so is he...He watches his videos which I am completely fine with but recently he started complaining about it and kinda admitted how it’s “the same hole” and how he doesn’t enjoy it so much anymore.... he says marriage changed us, in my defense my daughter changed changed ME. I’m more tired now with less energy. Just wondering if any other married couples have these problems and what do y’all do to spice up yalls marriage?