I find that watering with a sprayer is helpful with fabric pots. They tend to dry out faster and one thing you can also do is spray the outside of the pot and let the water soak in through the sides. Watering slowly like 3-5 min a pot helps them out a lot vs tossing a bucket of water in. as it just leaks all over and down the sides. Plus watering slowly prevents the soil from becoming to compact.
I use a 1gal sprayer from a big box store. it has treated me well.
Good Luck!
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