I just let mine dry out a bit......not totally dry and then water until the water comes out the drainage holes in the bottom. I do this with all plants.
BTW, I just re-potted my Sagaratia and it's doing great. I don't think it matters, the time of year with them. If you're unhappy with your potting mixture, pull him out and re-pot with a lighter mix. I like 50/50 Turface/Potting soil. I like the aeration and ability to force out harmful gases when watering that this give the plant.