Lodgepole Spring is pretty reliable most years. We did have a problem with it at the end of the drought, but before then it ran well to the end of summer most years. If you plan to go soon, you should be OK. If you are planning for late August or later, you’ll want to check back again to get the latest status.
Also, you should count of the water at South Fork Meadow as it flows year round. Maybe top off when you go through on the way up and if Lodgepole is running low when you get there, save your water for the stay and top off on the way back out as you cross South Fork creek.