Is it possible to set min qty for reordering rules which calculated from average item left stock in 3 month. For example this month is November and the item left the stock in 3 month are 

August - 51 units

September - 46 units

October - 61 units

So min qty for November will be (51+46+61)/3= 52.667 units

In this way I would have a stock for at least one month since my item delivery lead time is 20 days and it will increase if the  item become popular.

Thank you,