I've had this portulaca for 6 months. I keep it indoors as temperatures get very hot where I live (104 degrees +).
I used to water it every 5 days, if it was still dry 2 inches below the soil. At times, it went 10 days without water, but looked fine.
Recently, the leaves on the bottom half of the plant started withering and falling off. It starts at the tip of the leaf, then spreads to the full leaf.
When this started happening, I began checking the soil moisture level every 2 days and watering only when dry. Sometimes the soil became dry within 2 days.
However, the plant is still losing leaves. Appreciate if anyone can give me any guidance here.
When I water, I don't add a specific amount, instead I keep adding water until it starts to drain from the bottom of the pot.
Attached 3 pictures: the whole plant, close up of the soil, close up of withered leaves