Metatarsal stress fracture - how long til back in the saddle? - literally!

I was diagnosed with a stress frac of 2nd met two days before thanksgiving. Not quite sure how it happened, but I had surgery for hemi-toe replacement on 1st toe in Feb and still working on getting proper orthotics for good support of high arches and long mets.
I ride horses for fun and competition, but hadn't been doing as much this year since I sold my horse in April - maybe once or twice a week. Would occasionally bring horses in on trial and ride maybe 3-4 days in a row with no problems except maybe some chronic back pain that I'm working through.
Early November found a wonderful horse to bring home on trial. Rode every day for 5 days. He's 'green' and I needed to be totally off his back and in my stirrups when cantering or jumping. It was during this time that my foot started hurting more. Coincidence - maybe. Even prior to this time I was having some difficulty walking in the arena sand and doing "fitness" walking.
Been in a cam-walker for 5 weeks now. Going for eval tomorrow. Hoping for good news.
My question is - any thoughts on what I'll need to do to get ready to get back in the saddle and how long it might take? BTW - I bought the horse:rolleyes:. He's a real cutie and I'm really looking forward to riding him again and showing.
I'm 55 years old and up to this past spring had been riding regularly (except for 6 mos off due to a double leg fracture 2 years ago).
Somebody please give me some encouraging words. . .