Can I defer capital gains on a vacation rental I sold on 12/20 to another vacation rental I bought in 4/20 using like kind exchange?

I bought a vacation rental on 4/20.  However, it was un-inhabitable and I was not able to put it into service until 12/20.  That same month (12/20), I sold a vacation rental.  We were planning to sell that vacation rental back in May of 2020.  However, I was under contractual agreement until 9/20.  House went on the market 9/20 and we closed 12/20.  These are definitely like-kind  properties.  Please advise  what I need to do to defer capital gains to a property I bought in 4/20 from a like kind property I sold in 12/20