I agree , I was scare I may lose the top many times , lots of dead wood taken from her , I was very nervous cutting all foliage of lower branches , my babies I bring on in big pots go into a bush of beautiful flowers , planted one lot last year with 8 or 10 £5 for two from Morrisons , they bushed this year , I cut them back to 6 to 8 inches two weeks ago , they leafing out searching all ready .
The azalea I cut back in pics is very healthy , I was worried but she came back beautifully and is in desperate need to thin out and snip right back to one or two , always give shelter and dappled light not strong , the old pot she was in sat lovely into plastic tray so humidity helped her , she was put together by many sprouts many years ago , the whole front of tree and branches took the brunt when she was not watered facing north not sheltered she started this new fase I. Her life , some might agree with how I took out the soft centre , some would say the tree feeds under correct conditions from this , the tree will be passed on after she has been styled , no one knows she be treated right , but she the strongest azalea under my care , I would hate to hurt her , so I understand your hesitancy