Can't advise re pruning except to suggest cutting new growth back by half if you feel it is too leggy.. Feeding should have been done a bit earlier, using ericaceous feed but better late than never if you do it soon.. The important thing now is to make sure they get sufficient water, because if they are too dry in summer they will not flower next year.

Ditto,Sunbeam. Plenty of water is essential, as the buds for next year won't start to form,usually in August, or be as prolific..Maybe a mulch of Ericaceous compost around the roots, and/or an .Ericaceous Foliar feed ,as suggested By Steragram ..good luck..