I would like to limit the number of visible months in the Capacity Planning Detail view for initiatives

In my example, my initiative does not have a forecast prior to January 2020. I need to remove the visibility of the previous months (2019-08 to 2019-12) because it makes the data entry cleaner and easier to follow as we progress through 2020. As we progress through 2020, I need to remove visibility of previous months (2020-01 to 2020-06) - however, I do not want to remove the underlying data - just its visibility on the page so I can restore visibility of the previous months if needed.