Sentence Correction

It has been said that (all one can do for a sprained ankle is leave it
alone while it heals itself, ice it, and to) lie with it in a
slightly elevated position

1.
2. all one can do for a sprained ankle is to leave it alone to heal
itself, to ice it, and
3. all one can do for a sprained ankle is leave it alone while it heals
itself, and then ice it and
4. the only thing that can be done for a sprained ankle is leave it alone
while it heals itself, ice it and
5. the only thing that can be done for a sprained ankle is to leave it
alone while it heals itself, to ice it, and