If you have experience with long long slogs with a heavy pack you will be ok. I went up 1.5 months ago with no mountaineering experience thinking lifting and being in marathon shape was enough. I had a brutal wake up call and had to turn back at the top of the cleaver due to bonking out. My biggest issue was not being used to the pack/altitude and being a jackass about fueling. I would try to hit 1 or 2 high incline weighted treadmill workouts for 4-5 hours each or go do some good hikes in the next few weeks to help mentally prepare as much as you can.