By day, I wrap my ankle when sprained in cold, wet bandage. In the evening, I take a bath without the bandage and repeat as necessary. I find this helps me a lot, and my daughter has had two sprained ankles too in the past year, and this treatment worked for her too.
Just keep testing that ankle out to know when it's ready for a Cathe step routine, like go for a short walk first, another day try pumping up and down on the toes to get some movement going, and take it slowly when you do start back, like Step heat rather than Powermax or KPC!!!
Clare