My strategy with modafinil is to dose on the weekdays - so 5 days in a week.
I start with a half dose (100mg) on Monday and Tuesday, basically to get a better sleep, and with the tolerance going up, I’m also upping the dose to 200mg. But there are weeks when I stay on 100mg the whole week.
On the weekend I go without modafinil. I often sleep a lot, I think the body needs a break.
I may have been wrong about not taking breaks. However, I did find a study that indicates it may worsen underlying psychosis or schizophrenia over a period of time with supratheraputic dosages. It appears it got worse when the patients stopped using modafinil after they noticed the symptoms first occurring.
https://psychiatry-psychopharmacology.com/en/schizophrenia-and-other-psychotic-disorders-worsening-of-psychotic-symptoms-due-to-abuse-of-modafinil-a-case-report-132346