I often run into this sort of "hobby burnout", and I find the best medicine is to set that hobby aside completely. Make no plans to return, don't think about it, don't bookmark stuff for later, set it all on a shelf and drop it like a bad habit and move on to other things. Eventually you may regain an interest in it after enough separation, though it may not be the same as before. If not, you'll one day find all this stuff and either hock it all for some fun-money, or you'll revisit it for the nostalgia and that will be a hook into rekindling the interest. If you try to force yourself to maintain interest, or drop it half-assed, you will continue to burn out (if more slowly), and you will hinder any future re-interest.
