Hello @homehilltop and welcome to the Community.
Many people have already made valuable replies to your question which truly does not have a viable answer.
In a recent topic I did write out one possible method of gauging how long it should take to work through grades 1 and 2 of the Beginner Course. My answer was not nuanced and was really a grossly simplified cumulative count, given to the original poster of the topic as a means of providing context and perspective to what was breakneck too-fast progress on their part. The topic reply I made is here.
It does not provide what you ask for. What you ask for, if you want a time frame on the chart, is not possible to provide. We have people who genuinely assess themselves as still beginners after several years. And we have others who have reached unbelievable levels in quick time. There are too many variables and it is all too individual to even give guidelines (which is my my counting in the linked topic must be seen in context and not as recommendations).
Hope that helps.
Cheers 
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