MAINTAINING YOUR PLANTS:
I guess we all can agree; often pinching, like the animals do work the best. But when we fail to do that, we end up with bigger tasks. And now, we have to think.
Newer prune a dormant plant!
You open up to live tissue, but it won't grow a callus, covering the
wound. Fungus and bacteria will have free access to the live tissue, and
eat the plant.
Balance roots and branches.
Some plants can suffer from being pruned too hard. The rots produces
hormones to increase the top, and it do the same to encourage
root-growth. That make the plant "balance". If you remove a better part
of the top, it might die.
Re-potting to the same size of pot means pruning the roots. Then it is a real good idea to balance the cutting with a trim of the top. I always get away with sawing off a third of the heavily entangled roots, and just filled that space with new soil.
Old and new branches have to be considered. Some plants can live for "an eternity", if you let it have new branches from time to time. At the same time, some plants benefit from being "opened up" a bit. Remove some of the old central branches to let light into the middle of the plant. Else, it end up looking like a hedge.