I broke my ankle, so I know what you are going through. After all of the RICE work was done, I started to strengthen my ankles with calf exercises. You know, calf raises, extensions, etc.
AND what really helped me was a night splint. The ones that are used when you get plantar fasciitis.
At first the night splint was very hard for me to sleep with, so I would wake up in the middle of the night and take it off. And then little-by-little I could sleep the whole night without having to remove it. (Oh, don't get the most expensive ones on line cause I got mine at the corner pharmacy.)
Soon my ankle(s) were as good as new. Just my 2-cents.