Dealing with Senior Dog Arthritis

My 13-year-old Golden Retriever has been showing signs of arthritis in his hind legs lately, and I want to make sure I'm doing everything I can to help him stay comfortable and mobile. I've already started him on joint supplements, but I'm curious to hear from other dog owners who have experience managing arthritis in their senior pups. Any tips or recommendations for managing arthritis in older dogs would be greatly appreciated. Thank you!