Pay or quit rules in MN

[Jennifer Rysdam]

Hey everyone :) I have a tenant that is a few months behind in rent for various reasons. (I know, really stupid on my part - will not happen again!). Now I want to give them a pay or quit notice. Do I have to do the 14 days? My month to month lease states: "Failure to pay rent by the 10th may result in immediate termination of this lease and eviction proceedings".

Any advice would be appreciated. Also, if anyone has a MN form they'd like to share I'd appreciate it. 

Thanks so much!