I water mine as much as a high water mobility deciduous tree. With 5x the ferts.I thought they prefer dry soil. I’ve had good luck so far with limited watering.
True when they are dormant or semi dormant but not true when actively growing in summer. They will take a lot of water as long as they are not sitting in it. Of course the key word here is soil. In a houseplant soil they need very little water. In bonsai soil or cactus soil, you really can't over water them during the growing season.I thought they prefer dry soil. I’ve had good luck so far with limited watering.
How do I prevent my portulacaria from becoming too leggy
Cut back to below where you see any leaves/buds on each branch/twig to force growth closer to the trunk.
I find them to be one of the few that the trunk will thicken, even restricted to a small pot.