Hey, i feel your pain. You could try the 25 in 25 method. Takes awhile to get used to it.it pretty much dictates 60 seconds max per question. And then circle it an move on
... the day, everyone thought the 60's were different and harder ... swore by it when the 60's were the contemporary series ... 've thought it about the 60's.
When I start to feel sleepy, I study standing up at a standing desk or counter top. That usually gets me another 60-90 minutes of study time before my feet get tired and I need to take a break.