Not an expert but not very many dogs are even close to being mature enough to cull at 1 yr old. I have a son of off Rathke's Reno, grandson of Ben and my yard all comes from him and I only hunt on Saturdays, which may take longer to finish the dog. It takes 2-3 yrs before the dogs usually get the confidence to get out on their own and hunt. Some start early and most don't. I learned the hard way and gave up on dogs at 1.5 yrs old and made somebody else a good dog. I raised them and they got the benefit.. I had a friend get one of my pups off Cowboy and he gave up at 1 yr old and now she is finding hogs in Flordia and the guy loves her. Give her some time...
WOW! Two to three years. Have fun with that...