hornworms

someone please help me I recently rescued a leopard gecko from a bad situation about a month ago, the previous owner had said he has only ever had meal worms and for the first 2 weeks I had him he just would not eat them at all refuse them entirely. I then got crickets for him. He ate maybe one or two of them before he started refusing those. Then I got him hornworms and he loved them and eats them amazing but now that’s literally the only thing he’ll eat anything else and I can’t feed him only horn worms so i really don’t know what to do. my logic is if I take away the horn worms he’ll have to eat something else??