Bottle brush pruning tips

Hi all - I have a bottlebrush that until a recent trip to a garden Center I didn’t realise just how scraggly it is. I’m now not sure whether to try to try to encourage more growth on mine or to swap it out for a newbie. I’ve read conflicting advice about pruning bottlebrushes online and was wondering if you folks think I should stick with it and advise a game plan? Would I really have to prune it hard or is there a way to simply encourage new growth off existing branches? Photos of mine and nursery attached. Thanks!