You sound a lot like myself. I clean power heads when they get noisy or stop spinning. I cant remember the last time I cleaned a return pump. Dump skimmer cup when it needs it and wipe the throat with a paper towel and done.
Once I felt my first tank was stable and all inhabitants doing well after several years with no major setbacks I let that tank run. I did plenty of fiddling early on. Now I drip kalk, manually dose 25ml 2part daily and let it run. I do normal maintenance of course but other than that its watch things grow. To prevent boredom I set up another tank. Once that one was running pretty smooth I set up another. (see a pattern here

) The last one was just set up in February of this year and is a bit of an experiment for me using dry rock, bare bottom and bottled bac for the first time. I'm also trying sticks for the first time as well a type of carbon dosing with bacto balance.