Troubled sex life between me (33M) and my wife ( 30F)

My wife ‘30F’ and I ‘33M’ have been together have been together for 7 years and we have an 18 month old and a 3 month old.

A little backstory. When we got together we were having sex once or twice a week for the first 3-4 years. That was never a problem. We were both very active, working out 3-4 times a week. We were also both very sexually active previous to our relationship. We also never lived together during this time.

We broke up after 3 or so years and ended up being apart for almost 6 months. When we rekindled things, the sex picked up right back where it left off. And within 6 months, we ended up finally signing a lease to move
In together. Immediately things changed.

She stopped running or lifting completely. Sex almost completely stopped. We were maybe having sex twice a month. After 6 months of living together, she got pregnant.

Things weren’t awful. We still got along really well but the notable dropped off in attraction started to bother me. Before she got pregnant, I let her know that I wasn’t happy with how things had shifted sexually.

So I ended up buying us a house about 3 months before she gave birth to our firstborn. Things go well. Of course we didn’t have sex the two months leading up to the birth or the 3 months after. Which is fine because we aren’t allowed to have sex post birth and I know she wasn’t feeling herself pre birth. So we get to April or so, we’re cleared to Have sex and we maybe do it 3 or 4 times and lo and behold she’s pregnant again.

We probably average having sex once a month throughout the pregnancy.

Now we’re 3 months postpartum. Will things get better ? I’d assume not.

Some other notes:

She hasn’t worked since being 7 months pregnant with our first kid. It wasn’t designed that way and we never talked about it but she was dealing with a lot after the birth so I tried to do whatever I could to make her feel better.
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