Rehabbing an over-watered Zygo "Jumpin' Jack"

[Polypodiaceae]

I've had this for 1.5 years, and in my enthusiasm this fall, I'm pretty sure I've overwatered. I have yellowing leaves but green/unwrinkled pseudobulbs (4). Will prob lose all but 1-2 leaves, sigh.

Questions: in terms of recovery, should I put it under a grow light? Or let it have a winter rest, cut back on watering, and wait for growth in the spring? It's due for a repot, but should that wait a year due to recovery?

Thanks -