If maintenance becomes bothersome, maybe you should look into good converters and simple water-based inks. You can easily use a fountain pen like this during many months before you need to go through one cleaning cycle. For cleaning, you can buy some special cleaning agents which you can use just like ink.
Some other pen setups like vintage piston fillers and saturated inks can be high maintenance. It makes a big difference to choose a simple ink and a simple pen. The latter can be as easy to use as a rollerball.
Most modern "simple" (or boring) inks contain detergents to keep pens clean too. Waterman, Parker, Lamy and Pelikan (esp. 4001 series) are non-staining inside pens. Most of the standard blues (e.g.: Waterman Serenity Blue and Lamy Blue esp.) self destruct in water while resist time unless left under the sun (4001 blue is explicitly discouraged for archiving).
This means you can just put your pen section in a cup of water and wait until all water turns transparent again. Then rinse under the tap, let it dry and re-fill. It's this easy.
There are faster methods (I rinse & dry a daily driver pen in 5 minutes tops), but we're at HN and not in FPN[0]. :)
P.S.: I'm a fountain pen nut, AMA if you want.
As am I! Been collecting since childhood. I've spent more money than I care to admit on pens and ink...
AFAIK this is only good advice if your tap water isn't too hard as apparently this can damage the nib.
In my country, bottled water is very cheap hence it's used a lot in the household. I prefer bottled water for dunking my pens.
In any way, a pen doesn't stay in room temperature water more than 24 hours and inks already have cleaners inside. For a frequently used pen, you don't need to clean it more than 3-4 times a year.
It's always possible to "power wash" a pen with a bulb syringe and some water in 5 minutes but it needs some experience and willingness.
For bad papers, I have had a lot of luck with Pilot F or EF nibs and Herbin Lie de Thé ink. It's a dry setup, but not too dry, and that Herbin has just enough lubrication to make it pleasant.
I have a bit of a 'habit' myself, but I can't say I experience any need for real maintenance.
Also if you change the ink brand. Or colours.