Peg down the live bits into the soil so that they root. Then use the rooted pieces to replant.

Hi Owdboggy
Thank you so much didn’t think about doing it that way will give it a try thanks again xx

Had another thunk. You could fill up the central space with potting compost (ericaceous obviously). The live bits could then root into it and before trained back to fill the hole. I have done it that way to propagate Heather.