Cloning a good male is the only sensible way to hold onto him. A male in flower will finish and die within weeks, so take cuttings while he is still in veg, root them, and keep one under eighteen hours of light as a mother in a separate space. The guide to maintaining male mothers at https://breederregularseeds.com (https://breederregularseeds.com) covers how to reveg a flowering male if you missed the window, though it is slow and not always successful. My oldest male clone has now been running for three years.