need some help!!

ok i think my plants are in about 6 to 7 weeks flowering well one of em is i forgot to keep track when they started but the hairs are turing brown n reseding in and i hav a microscoop 60x to 100x but its still hard to see the trichomes little blury cant keep a steady hand lol but i think i see some amber ones its just had to tell but some of the leaves are starting to yellow a slight bit n bend and i know that happens at the end of flowering iv been givin it the proper nutirents so i know thats not the problem? so basically should i cut r wat cause i dont want the thc to start togo down

Pics, or we would just be guessing.
Try to get some scope pics, but the general rule is look for about 50% to be going amber and its time to chop.

snip a small leaf off and put it on a table or something, then you can get a better look at the trichs......good luck...

ya ive done cut small leaf off still hard to see but yesterday it rained for like 30 mins was very light sprinkle first time the buds r plant got water on em well in flowering n i see some small white spots on some of the leaves idk if its powdery mildew r not it wont rub off i even saw some purple powder on some of leaves idk if thats just somethin that got on it r if thats forum of mildew?