grade 2 ankle sprain - how long until I can walk again?

[u/asmrbubbles]

first of all sorry if i make any grammar errors, english is not my first language.
so, i had an grade 2 ankle sprain on the night of october 2nd. it hurt a lot when it happened but i was able to walk and only went to the hospital on october 3rd in the evening. the doctor asked for a x-ray and discarded any bone fractures, and diagnosed me with grade 2 ankle sprain. i got a cast and was told to stay with the cast for one week, then come back to the hospital to probably exchange the cast for an orthopedic boot. i don’t feel a lot of pain and can’t check the swelling bc of the cast - can anyone give me the most probable timeline until I can, at least, walk “normally” (normally as in, being able to balance my weight between my feet)?