I feel so disconnected from my husband

We have a toddler and a 4 month old baby. My husband doesn’t initiate sex. I’m always making the move. I want him to take charge and show that he wants me. Some times we go months without being intimate until I make the move. It is getting old and boring. Before you jump to conclusions, no he isn’t cheating or anything like that. He works a lot and come home. He is a great man and father. It’s just that I don’t feel any affection or romance from him. Is there something that I need to do? Is he no longer attracted to me after having the kids? Maybe his testosterone needs to be increase? I would love any advice and suggestions from males as well. Thank you!