Sorry about your foot mate ! I broke my foot kitesurfing last year
I went hard on the rehab and was back on the water in 6 months
the doctors said around a year . First I did heaps of stretching and
Getting strength back in my foot with elastic in the couch time ,2 waist deep in a pool walking 3 swimming at the beach pool everyday watch out walking on sand kills 4
Body boarding with a flipper on good foot nothing on bad foot. .
Worked for me now it's like I never broke it .
Hope all goes well and your back on the water soon