pruning definately should help another crop. start.
I got several cuttings from someone in Fla for an ever-bearing
and i also bought a "dwarf ever-bearing" which i think were the same plant.
they grow easily from cuttings, and , while the first crop is fairly good
(still kinda small, but nice flavor and acid/sweet balance)
i get sparse few berries, and often very small and shriveled...
basically bird food.
The wild red i have is much better.
i got a Pakistani thats now 12ft tall and growing fast
i am hoping the fruit is good, and doesnt fruit at the exact same time as my red.
i also got a Morus Nigra mail ordered a few months ago.
it was only 2ft tall, but had 2ft of root.
i was under the impression they were much slower growing, but, its been taking off.
These are supposed to fruit at the end of summer i think.
probably wont know till next summer/fall.
a trick ive been using is to plant nitrogen fixing plants
underneath, or at the base of my young trees.
ive been using a bean that grow really fast here.
also using Senna Obtusifolia.
It might not help it crop a lot, but it will help growth.