since you'll be married in 2022, a married (as of 12/31 of the year of sale) couple would get a $500,000 exclusion if they owned the house and both used the house as your principal residence for any 2 out of 5 years before the date of sale. since you will only use the property as your primary residence for 23 months the maximum exclusion will be 23/24 of $500,000 if you file jointly.
it may not matter much but the time periods can be computed using either days or months as long as the method is consistent
