I'm in stage 3 kidney disease w/ large renal angiomyolipomas bilaterally. my doc has no fluid restrictions. i drink 3-4 liters h2o daily. too much?

Sounds fine: Water isn't a burden on your kidneys. Only late in the course of kidney failure will there be a need to restrict, for the sake of the rest of your body. Hopefully that won't happen. Do look for a cause of your renal insufficiency other than your TS / lipomas. If it's just loss of renal mass from compression, ACE inhibitors might slow progression. Keep learning & glad you asked.