About a decade ago we "cut down" our apple tree. Took it dow except the trunk. The truck is easily rockable. It moves freely. However...about 6yrs ago it began to develop new branches and has grown a new section even though the trunk is so easily movable. A couple years ago it began to flower and produce small fruits. Last summer i tasted a few that had actually turned red which is something that never happened to the origional sections which is why we cut it down. They tasted great but they were small and not all of them turned.

So now i want to revive this tree so it produces a real harvest. Right now i will grow a few dozen small apples and about half of them make it to maturity. How can i restore this tree? By all acounts everything appears dead except the new growth. The trunk barely has any back besides the one side that has the new growth. Can this tree be saved or will it just kind of limp along?