Very gentle exercises only
Unfortunatly, the disc/spine damage has already been done(mostly from genetics) and will never be the same, but it can be managed with dilligent care.
Pets are very prone to worsening damage when treated with chiro - don't do it! Especially with nerve/disc/bone damage, it will create increased inflamation and scarring and often will cause permanent, irreversible damage.
Accupuncture is basicly placebo for the owner and won't do anything for the pet.
Continue with gentle exercise, the canine 'yoga' could be beneficial if not overdone - easy stretches and passive motion helps to keep scarring flexible and reduces nerve pain.
Joint formula supplement success can vary, each case responds differently. Omega oil supplements seem to be the most beneficial, along with MSM.
Whatever you end up doing, always keep your vet informed of Foo Foo's progress - good or bad.
Good luck, and bellyrubs to all the furballs :)