You don’t get much of a choice on how little you wish to be scheduled to work-rosters get built at the divisor for the fleet. When you are junior in the rotating seniority (737) you will work circa 18/28 days. When senior you may be able to fly just under half of the 28 days.
Something tells me however that down the road the company will find a way to coerce recent hires onto the A220 for **** pay.