There will be water at South Fork Meadows (where the Dry Lake/ Dollar Lake split is). You will want to plan on this being your last chance for water*… which means carrying all the water you’ll need up to the summit and back to this point.
Will you be going UP the Dry Lake Trail also or taking the Dollar Lake Trail and returning via Dry Lake?
*If you are heading up the Dry Lake Trail, you *may* be able to get water at Lodgepole Spring before heading up to the summit but last I heard, it was running slowly.
If you are going up the Dollar Lake Trail, I seem to remember someone recently saying there was still water near Dollar Lake, but I wouldn’t count on it.