1031 Exchange time frames

[Michael WIlliams]

Hello my fellow BP'ers, 

Quick question, I purchased two rental properties in November 2019 and I now have an opportunity to buy two more that are performing considerably better than the two I now own. I would like to 1031 exchange the two I bought in 11/19 for the two new ones, how long should I wait to use a 1031 exchange on rentals? I've been told that the IRS prefers you hold on to an investment property for at least a year prior to using a 1031 on it. Has anyone experienced any issues using a 1031 exchange in under a year? Thanks in advance for your feedback.