Two well spaced lessons a day is doable, once you have a few hours under your belt. Initially just one lesson will soak up a LOT of energy.
The advice to get going with ground school and exams is sound. It means there's progress going on even if the air work lesson gets cancelled due wx.
I found flight sim is useless for VFR flying, but great for practicing IFR procedures, so I'd use it with great caution in ab initio training.