A common dilemna faced by people is ‘how to prepare for management entrance along with work?’.
Please do not mind, but I think of these thoughts as excuses. If you want to do something, you need to find time to do it. Stop procrastinating. Hard work is a prerequisite for everything.
It takes 2-3 hours of concentrated study on weekdays, and 4-5 hours on weekends. If you can not take out this time out of your schedule because of a temporary crunch time @ work, then grab opportunities like a lenient phase at office and utilise your time.
Your situation might be a different one, but then you need to find a solution within these constraints.