"Transplanted plum tree" - pruning

I've been reading up and apparently I shouldn't prune it as it needs its leaves to grow new roots. But it will need watering well for a couple of years. I will need to trim some branches where it has been damaged but other than that, I'll just thin it a little, water well if dry and hope for the best. I'll probably remove most of the blossom this year if it flowers.