My normal male who is 3 years old lost both spurs and is growing them beck right now. With every shed, I notice The little stub gets bigger and bigger. No worries. Males Usually go on hunger strikes. I wouldn't worry. If It starts to go for more than two months.
PS. My male lost his spurs a year ago, they haven't fully come back yet but Like I said, I do see progress in their re-growth. Hope this helps.