I have a small tree I rooted from air-layering a branch from my neighbor tree. The neighbor later told me that the mother tree produces a lot of fruits which never rippen and fall down. The tree did that year after year. Being afraid my little tree will do the same I decided to graft branch from a good tree another neighbor has on my little tree. The problem I have the trunk is so short but it has several branches if I go with big cut and remove all the branches I have very little room in the trunk. Another approach is budding on the branches but I am afraid the tree will defeat my purpose and grow its own old branches even if the graft is successful. how can I prevent it from growing its old branches.