Have you considered running in a pool? Minimal danger of falls. Easy on the joints, blessed release from gravity, water gives a good resistance while you are building up those running muscles and reflexes.

The spirit may be strong, but the knees and ankles have something to say about the process. You might consider checking in with an orthopedic practice to get evaluation of your hips and knees, and get their advice.

Good luck, and congratulations on your progress. Your summer is going to be so much better this time around because of what you’ve accomplished.