Thanks for the quick replies. What a wonderful and responsive community. Glad to be a member.
To answer some of the posted Qs. Im located in Australia. Just enterred Autumn so plant would be going into hybernation soon which is lucky for me, can get stuck into prunning soon.
I thought the soil would suffice as it is cactus/succulent mix I got from my local hardware store. But, as advised, I will incorporate more gravel into it and repot. Poor plant is being manhandled quite a lot lately.
Thanks for the examples of where to prune. Will the plant cope with all those stems being lopped off all at once? Or should I prune half now and half next season? Im not concerned about missing a couple seasons of bloom. I would rather be patient for a few years but end up with a great bushy full plant.