Rekindle love again?!

When going through a rocky patch in your relationship that you were almost sure you couldn’t come out what did you do to try to make it better and were you successful??? Did you add any activities, more sex? More talking? What worked for you?

No cheating involved. My fiancé and I are just both burnt out from constantly fighting these last couple of months due to miscommunication. I want to get our spark back and become balanced again. I would appreciate any advice.