@EtherealAzylis me personally I pick a thing to hyperfixate on for about 8 months - a year and that becomes my life every single time I hyperfix on something I end up changing to those ship as well. One of the two active thing I have ever hyperfixed on was Lego Ninjago (still a fan) were luckily i have no preferences on ships (in my eyes all of them are still dumb teens) I luckily only hyperfix on stuff that is inactive (game/series/book is complete) so I don't have to deal with active angst with my favorite ships ^______^
A few hyperfixs I can remember is, Lego Ninjago, undertale (the AUs), and fnaf. I have had a handful of mini ones along the way like Harry Potter, Lego dreamzz, and undertale. Along with micro hyperfixations in that (example Lego Ninjago I would hyperfixate on one character for about 3 weeks - a month)
NGL I lost the point a while ago it like 1 am my time so my brain refuses to render anything rn