Follow up to last question about white dots on leaves this is what follows

I think this is burning or PH drift in a young plant. I had something similar to this. and it resolved after a good watering and some time. I don't see this as thrip damage or spider mites. its just not how it looks to me from my experience with them. and with your magnification on them pics you would be able to see the thrips. they like to chill on the upper side of the leaf in the veins and channels of the leaf The white dots in the first pic looks like trichomes on the leaf. Although mites do make small little white/grey spots. They don't seem to be in an organized pattern like I am seeing on your leaves. Manly in the first pic.

Do you see any insects anywhere, flying or jumping? See webs anywhere? Possibly thrips or spider mites. Check the underside of leaves, check veins, check lower branches, etc for pests. If lucky, you can remove effected leaf but definitely check other areas. You will have to use a spray or predator insects to get rid of them Natures Good Guys has lists of predator insects on their website.