NSFW What if he doesn't take the initiative to instigate sex?

You both adore making love together.
After sex you both wonder why you don’t do it much more often.
Once a month or less is just not enough!
If you take the initiative he’s ready to go right away.
You know he doesn’t always feel well or feel rested.
You have lots of time together. That’s never the problem.
He’s romantic and affectionate daily but doesn’t suggest or initiate making love.
There is no way he’s getting any on the side.
What can you do about it?
You’re pretty playful in the bedroom, but you are not accustomed to being sexually provocative or dressing seductive at home.
How do you get the more frequent love-making that you both want?