Ankle Ligament Tear. Removal of plaster?

I had teared up my ankle ligaments after falling down while playing football. Upon consulting the doctor, he plastered my ankle and advised me rest alongside medicines. I am attaching herewith the prescription paper. He further told me to visit again after 10 days for changing up of plaster which would be put on for a further of 10 days. He told me after these 20 days with the plaster, he would tie a supportive belt around my ankle for another 7 days or so. As of now 11days have passed with the first plaster and I feel that the injury has healed up by 90percent. Also, there is very little pain around the ankle at present. Now, I have three questions to ask:- 1. Whether I should continue with the present plaster itself for another 10 days alongside the prescribed medicines, and then get it removed after a total of 20 days? Or do i need to change it right now? 2. Can i get it removed right now altogether and massage it at home? 3. Is physiotherapy necessary after removal of plaster?