Instead of initiating, take a step back - but tease him and make him want you instead 
Things like - dressing up, sending sexy photos, sexting during the day, flashing your undies, groping him, whispering in his ear what you want to do to him.
I’m in my 30s, contraception free and my sex drive is better than it has ever been - much to MrCupc8kes delight 