Thank you Candis and Tina.
It's not that I can't concentrate for 3hrs straight, during the time that I try to study, I start to study, 1 or 2min later my mind starts to wander. Then, I bring my mind back and then the same thing happens. So, I'm staring at a paragraph for 3 hrs (with walking and stretching breaks in between). After 3 hrs of fighting with my wandering brain, I can focus for 30-40min in which I do get some studying done but, by that time my body is tired (not to mention that in almost 4hrs I only get through a fraction of a lesson). What's worst, the next day, I can only recall about 10% of what I studied the previous day (which is very discouraging).
Thank you again for your advice Candis and Tina.
PS. I do have the Photoreading Home study course, but because I'm stressing out about this class, that brings unnecessary stress to learn to photoread (as is mentioned in the program). I'm still thinking of finishing the program but my class really is taking over "my world" at the moment.
