My FND was brought on by a car crash in April 2014. It's been a long process but I've gone from a wheelchair to using sticks and a scooter when out and about.
I have found that going for massages every month or so can help. Also going swimming three times a week... I just started with a few lengths but it's about what works for you.
I started with doing leg movement in the pool and progressed slowly over time to more movement. I use the seat hoist to get into the pool
So it's about what works for you but give it a shot..
Meet with the pool manager and discuss your needs etc and you will find how encouraging the staff can be!