I agree fully with sunkacola, and it's also my experience to find your own way to get good sleep. Pre-fibro I was always slept well, I went to sleep inside of minutes, got up at most 1-2x per night, could adjust my sleep fairly easily, could cope with 6-7h for a while, then started targeting 8h for years. When fibro built up I just started getting very tired at 9pm or earlier, couldn't manage to go out late any more, like dancing for an hour. Then fibro completely changed that inside a very short time, getting up 6-9x every night, struggling, not knowing how to get a restorative night, and slowly bit by bit managed to find my own way. Looking at the normal sleep hygiene recommendations, e.g. my laptops are on night shift from 16:00/4.m. to 9am, but adapting them, e.g. sometimes sleeping for 2h in the afternoons without seeing it make my nights worse.
The main aim for me is to get my sleep as restorative as possible. And that has sometimes meant getting up for an hour or two or three at night until I'm tired again - without bashing myself for it in any way - or instead to use yoga nidra as pseudo-sleep, esp. if I need or want to be up in the morning. If you can sleep 10 hours then unlike me you will not need to find supps to make you more tired without zombifying. And as this sleep seems restorative, you will not need to find triggers that prevent that.
Sounds as if you are doing great with sleep, and I'd then ignore anyone who says it's bad for your health. So try changing this attitude first, accepting it as it is. And I'd only adapt it, if you then feel the need yourself.