The only real help I've found, due to bad reactions and/or negative 'not fun' side effects from the meds which I've tried, has been from lifestyle adjustments.
Within the forum I've posted in regard to such many times; yet such (including below) are what has helped me, and we are all different so it all varies from one to the other...
Food is hugely relevant and important for benefits to occur, such is difficult and a continual juggle, or at least for a long stretch into finding then developing what works for you, best.
Sleep hygiene is definitely a big factor and consist of many elements: comfort, quiet, dark, pretty strict routine, length/s, when needed, as needed, etc...
Maintaining minimal stress plus anxiety level/s, is very important, especially for my Cataplexy to remain more minimal.
Acupuncture has benefited me, along with some occasional cupping (yet, 'cupping' I am not necessarily recommending, I have other health matters which play into it all).
Gaining knowledge with understanding of the disease, reading others experiences and recommendations, building awareness of my own condition/symptoms/much more and recognition has hugely helped me to be able to gauge things as well as manage or juggle the many things; relating to the symptoms and disease.
Here's an interesting article I just came across, a few minutes ago (not necessarily relating directly to Narcolepsy, but I found it interesting as it is describing a lot of helpful lifestyle type adjustments or strategies, which seem fitting, all relating back to sleep):
The best of luck.