I've flowered an ak48 for I'm not sure exactly because I was stoned but somewhere around 56-60 days now but I'm not sure she's done. I would love for her to be done though. Is it? Say yes.
I do not see many amber trichomes indicating that the AK48 trichomes are maturing in your photographs.
I harvest my cannabis plants by trichome maturity. You need a 30x jewelers loupe to see the trichomes and judge when to harvest. Most people harvest from 5%-30% amber trichomes. Harvest at 5%-15% amber trichomes for a "head high" energetic effect and harvest at 30%-50% amber trichomes for a "body stone" sedative effect strain dependent.
I own a Hydrofarm Active Eye 30X jewelers Loupe, Carson Optical MicroMax LED Microscope 60x-100x and a 25X-200X Magnifier USB Digital Microscope Video Camera that I use to take trichome photographs.
I have both of the lenses above, but im not satisfied; still not sure on the trichomes. The activeeye is good for inspection the plant, the other require a steady hand, or a cutting loose a bud.
When I use either the Hydrofarm Active Eye 30X jewelers Loupe or the Carson Optical MicroMax LED Microscope 60x-100x I cup my hand around the bud to steady my hand and maintain a focal range easier.