My 10 year old dog has this condition. Our vet gave her a supplement called Vetri Disc by Vetri Science Laboratories. It supports canine joint health. We kept her immobile for 2 weeks (so hard), used anti-inflammatory pain killer called Metacam for 3 days, changed food to a more nutrient dense one, trained the bigger dog to stop bumping into Dear Doggo and got doggie stairs. We don't which of these helped our dog or if all of them helped but, fingers crossed.
Xo