Move back in to capture "2 out of 5" possible?

[Chase Burge]

My wife and I lived in a house from March 2016 to September 2018 (almost exactly 18 months to the day). We then rented it out after we relocated across town. If we move back in for 6 months are we able to avoid the capital gains? 

From reading other forums I understand it is not necessary to have exact dates and/or proof of those dates. I just wanted to ask about my specific situation since it seems like the posts I came across no one moved back into their property to capture the full two out of the last 5 years.