there is a lot of rain coming in south Georgia which is what causes the Suwannee to flood. The speed of recovery is largely dependent on how quick the river will come down. If the river stays high, the caves take longer to recover as the reversing process is based on water pressure. If there is high rain fall along the river, then it will take longer for it to fall since it can't drain as fast. If there is more rain in south GA, then the river keeps getting fed and again, it will take longer to go back down.
Lots of rain for the next week in the Valdosta area and as long as that continues it will take a hot minute to come back down.
My gut? It'll be a month or more before the caves are back to "normal". When they become diveable will be sooner but it's how ugly they're going to be. We will see cold and tannic pockets in Peacock likely until April ish pending the "normal" flood season. It's going to be an interesting spring, that's for sure. Lots of business going to Marianna area though because of it which is good to help them with the hurricane recovery.
South Georgia is getting a lot of rain, and set a rainfall record for December. Duration of clearing out after a flood isn't directly proportional to duration of the flood. Considerations are what was the hydrostatic pressure of the spring before the flood, was the aquifer "well charged". Also, the local rains will help keep the aquifer well charged to push out the tannic water. Perfect example is the 1998 flood, the caves cleared up quickly. Either way I wouldn't make any travel plans for north Florida for the next few weeks.