On the chances of repair d_q, it seems to depend on the type of damage caused. Because I found a relevant 2014 report below.
The report deals with extreme gout Uric Acid Arthritis, and extreme uric acid lowering. So, it doesn’t exactly match your situation. But I believe the principles still apply. So there’s strong evidence to suggest bone erosion will repair itself. Unfortunately, less chance of Joint Space Narrowing reversal, or cartilage repair.
Joint Repair after Uric Acid Lowering Reference
Dalbeth, Nicola, Anthony J. Doyle, Fiona M. McQueen, John Sundy, and Herbert SB Baraf. “Exploratory Study of Radiographic Change in Patients With Tophaceous Gout Uric Acid Arthritis Treated With Intensive Urate‐Lowering Therapy.” Arthritis care & research 66, no. 1 (2014): 82-85. Bone Erosion Reversed after Uric Acid Lowering PDF.