Not all plants follow the same path.. some seem to hit the gas pedal at teh end and others take longer from seemingly the same point.
I see a lot of long white hairs - this means the calyxes haven't fully fattened up. You probably have at least 2 weeks.
To reduce anxiety.. harvest is a reaction to observations... it's not a decision. The plant makes the choice for you. You may not have familiarity, but you'll gain it soon enough. Scoping trichomes ia great, but not an infallible method on its own.
The good thng is mistakes around a normal harvest window are not a catstrophe. You may find you prefer early-middle-late but nothing will be devastatingly ruined learning what your preferences are.
Watch those calyxes fatten up... when they seem to stay the same day-to-day start scoping the trichomes. Not all plants amber up in the same way... you may need other visual cues to help in those situations.
my method, not saying it's what you should do but may give ideas on how to approach it in more than 1 way. I hate over-ripened flavored buds. I kept running into that with plants that didn't amber up in the same timeframe as most plants. Nowadays, once the plant looks fully ripened and by the human eye unchanging day-to-day, i put a time limit on how long i will wait to see X-percent amber trichomes. whichever comes first... either ~7 days or when i see the amount of amber i typically expect.