I've got a huge one. It's looming over and starving its neighbours of
light so I'd like to make it more compact but I've no idea how to
prune this. For the last two years I've followed my instincts but it
seems to want to get bigger and bigger.

Could anyone offer any tips? At this stage I don't really mind
sacrificing next years flowers if I can bring it under control.

Also leaves are currently very pale. Is this an acid lover requiring
the same treatment as the azaleas?

Thanks for any insight.