I’m not an astronomer/astrologist, but as far as I’m aware, this isn’t due to the Earth’s magnetic field weakening; instead the string of aurora borealis events we had last year are attributed to especially strong geo-magnetic storms as a result of heightened (near-peak) solar activity.

Just like Earth, the Sun has its own “seasons” where the amount of energy and radiation it outputs varies and cycles from “decreased”, or low, and “increased”, or high, every 7 years or so.