Oregon Rent Increase Question

[Sam Wilson]

Good afternoon, 

First of all, thank you for taking the time to read my post. I am a newer landlord in the Oregon market. I have one SFR rented out and leased through June 1st 2022. I didn't think about laws regarding rent increases until the renewal came up for discussion. I have a great tenant and am not concerned about them being upset in any way. I would like to verify that I am doing everything I can to follow the letter of the law. I am reading that you need to give a tenant 90 day notice to increase rent if they are on a fixed term lease. In order to change this tenants rent, do I:

1.) Change the lease to month to month at the end of the term (6/1), serve the notice today and wait 90 days to increase rent (more trouble than it's worth for $30 a month?)

2.) Send her the notice now and increase the rent at the end of her lease (6/1) / is there something I am missing?

3.) Leave the rent as is and plan for a larger increase next year following the 90 notice standard 

Thank you for your answers in advance, it is much appreciated!