If you want to know any more, I can help a bit. My aunt is v active in the UK Association of Narcolepsy so I know a fair bit about treatments and stuff. She's had dreadful narcolepsy all her life and my grandma also suffered from it. I have some of the minor symptoms and most of my family have sleep problems of one type or another! So do ask if I can be of any help.
Also, be aware that many GPs know little or nothing about narcolepsy so you may have to make a bit of a fuss to get taken seriously. This is one condition where a bit of research goes a long way!