economics is a life long learning you cannot learn all of it and be a master in a year, you really need to insert it in your schedule in your daily routine to check, read or even observe how the market flows because it affects the whole ecosystem of business that surrounds you its like an energy it change every time there is no fix value of things so you really need to familiarize your self and adopt the change.
This should not even be only about economics, as looking at the OP's questions generally it is more like him asking for the best time to study a subject.
No one can know that except oneself since you know when you get to achieve better while studying certain subjects which does not vary anyway, as it cuts across every other subject as well based on your style of reading. I cannot read in noisy environments, but that does not mean if I have chance during the day, I still cannot find quiet places to read.
Personally, I do not joke with my sleep anyway as I need it to stay alert and understand everything I read. Less sleep sometimes can lead to less absorption. Everyone can easily find the best time of the day that is OK for them, the right place that works fine for them, and draw up time table based on that.
