Just watched your video! It looks like they're progressing nicely even if it is taking a while to actually form.
My dreads that have formed naturally are also small like the ones you showed. Some of them are now doubling up onto each other or pulling in other small sections. For me, they seem much thinner at the tip but when I follow it up it ends up being about 1/4 in at the base.
Livin' wild and free in NC
Follow my dreadlock journey on instagram: @3_little_birds2316