The problem with Mephisto is that they are always sold out, like right now... Vendors selling seeds with the same name as Mephisto e beyond messed up :0
Nothern lights from which vendor? Have you tried the FastBuds version?
Have you ever tried the White Rhyno?
I thought the more cbd the better for sleep? Interesting...
I've grown the AutoSeeds version of Northern Lights, Polar Express, and it was excellent.
The sensi brand was almost as good.
I'm growing the GrowersChoice version right now.
NL from any reputable breeder should be excellent, so I'd choose the easiest to get.
I haven't tried the FastBuds version, but I suspect (without proof) that their strains have a bit more CBD than I like.
A recent fastbuds Blackberry harvested for sleep worked poorly for me, likely due to too much cbd. More than about 0.5% ruins a strain for me.
My first try of this strain also fizzled a couple years ago.
My experience is that Mephisto, NightOwl, and RocBud are a little better than most breeders, but not enough to justify the hassle of getting their seeds.
Eventually the fads will die down, and those seeds will be easier to get.
CBD is a mild stimulant.
It can also relieve stress, and if stress is harming sleep, it can help.
For me 1 mg cbd is like a big cup of coffee, and I get energized and jittery.