Try putting him in with her after she sheds, and leave HER shed in with her.
I have tried using male sheds with almost no noticeable difference.
I have tried plugs with no noticeable difference.
I do not put males with other males, all I've ever see that do is stress out the non breeding male even more so.
Patience, good husbandry, a receptive female and more patience is required for some males, good luck![]()