For frequency, that depends on a variety of factors I suppose.
Is it indicative of anything?- I sleep really well, never had any issues with sleep- and wake up well-rested. Is it better to remember more dreams?- if so what are the benefits and how to go about doing it?
I also rarely remember dreams and despite occasional exceptions wouldn’t consider most of them vivid. So I tend toward heavier dosages :)
Some people are tempted to push the dosage so far as they can take it to experience "ego death", and I don't think that's necessary for therapeutic effects. Not quite sure how safe it is to push the dosage as high as you can either. There's some kind of esoteric belief in some circles that you'll get some magic enlightenment, connecting with another realm if you trip hard enough, but imo that mostly attracts people who already have fragile mental health.
A practical approach is to take about 1.25 grams of dried cubensis, wait about an hour to see how you feel, then try another 0.5 grams if you're up for it, and then another 0.5 in half an hour. By that point you'll have ingested enough to notice effects for sure, and you'll have confidence what your personal right dose is.
Beware of tryptamine tolerance: wait 2 weeks between doses to reset your sensitivity.
Each mushroom contains a different amount of psilocybin. You can calibrate a batch by grinding them all up at once in a coffee grinder and trying a sample. (Always be careful taking powdered mushrooms that someone else has ground up, because you don't know whether anything else has been mixed in.)
Also look up "lemon tek" to prevent tummy upset.
So like pharmaceuticals, you figure out your goals, go with something in the range that works for most people. It doesn't hurt to start very small (0.25g), which some people do every day. There's a lot of variables including strains and even when/what you ate last, where you are in any kind of hormone swing (men have them too), so trial and error is about as best we can get for now (recreationally). This is why I'm really excited by these new pharmaceuticals.