How to generate month and year starting from specific period till current month and year?

This may not be the most efficient way of doing it, but it should do the job. Set any date as local!startDate (or make it a rule input so you can pass it in to the expression), and this should return a list of month/years including the current month/year. Obviously make any changes you see fit, but this should get you 95% of the way there. Hope this helps!

load(
  local!startDate: date(2014, 2, 1),
  local!yearDiff: year(today()) - year(local!startDate),
  local!monthDiffTemp: local!month(today()) - month(local!startDate),
  local!totalMonthDiff: if(
    local!monthDiffTemp > 0,
    12 * local!yearDiff + local!monthDiffTemp + 1,
    12 * (local!yearDiff - 1) + local!monthDiffTemp + 13
  ),
  a!forEach(
    items: enumerate(local!totalMonthDiff),
    expression: with(
      local!date: eomonth(local!startDate, fv!item),
      text(local!date, "MMMM yyyy")
    )
  )
)