If anyone needs inspiration to observe (or continue observing) Polaris, a new paper by Willy Torres (Harvard) that appeared on astro-ph late last week may provide it:
Though this deals mainly with the radial velocities, it is clear that high-quality photometry remains useful, and is analyzed here in context with the rv's. The introduction of the paper provides a comprehensive overview of the observational history of the star. The writing, data analysis etc in this paper are fabulous, and characteristic of Torres' work.
Since the pulsational amplitude is only a few hundredths of a magnitude, it seems to me that there is no need for photometry in many filters since colors are not changing. I would recommend just B and V, mainly to convince oneself that whatever variation appears in one filter must appear in the other in a consistent manner (i.e. almost identically).
I note also in the Torres paper that the longest recent series of rv's has come from the German amateur Roland Buche using a backyard telescope. Another high-quality series was published, by the way, by Joel Eaton in the JAAVSO in 2020. Since Joel has since died, it is lucky we have those data available,