Typical 6 Month Mastery Plan = 2 hours practice/week = 52 hours total practice.
Therefore if you start practicing non-stop at 6am Monday morning, all the practice you will be applying to your plan will be finished by 10am Wednesday morning. If you apply the same plan for a year, your non-stop practice plan will be complete by Friday at 2pm.
Bottom line, your mastery plan should not be about deadlines. A good plan is about sustainable structure. After all the value is in the journey, not the destination, and mastery is a process, not a program.
“Every year is getting shorter never seem to find the time. Plans that either come to naught or half a page of scribbled lines” - Roger Waters (b. 1943)