Hi everyone, this is my 3in1 grafted pluot tree that was planted this March. it put on alot of growth. i’m trying to figure out how to prune it when spring comes. i would like to extend the primary branches of each type.

do i thin the most vigorous branches you see in the pictures because they wont bare fruit well? or do i head them and use those to extend my main branches?

i also have multiple branches from a single spot, i should remove one right?

also is that a flower/fruit bud?

thank you