It isnt several month for SPLs.
And FYI there is a long topic discussing this in circles. Will close here, please head over if needed to not further duplicate the discussion.
Edit: the current roadmap is quite undefined
What is the software support roadmap for The Fairphone (Gen. 6)?
Packing a powerful Snapdragon 7s Gen 3 chipset, the Fairphone guarantees smooth, reliable performance for years to come. With eight years of software support (until 2033) and a five-year warranty, you know it is built to last. We are the only smartphone in our category to offer this number of Android upgrades, allowing you to keep your phone secure and up-to-date for as long as possible.
https://support.fairphone.com/hc/en-us/articles/9979180437393-Fairphone-s-Operating-System