Catch the Saratoga bus, get off at the Congress Park stop, and walk to Disney Springs.
Scratch that.
I thought they still had the direct buses from the water park to the resorts.
Even as poorly as Uber and Lyft are working right now they are probably the best option.
I know a few years ago the kids left by Disney bus about 40 mins before my wife and I left by Uber. We arrived at Typhoon Lagoon before them as they waited forever to transfer at Disney Springs.