Milky trichromes will become less and less milky. The top of the trichrome heads will start to become translucent working down the head of the trichrome. As this is happening the trichrome is starting to turn light amber. As times goes by the light amber will darken.You got another 2-3 weeks, I'd say more like 3 weeks.
Same age? I'll back-peddle on the "almost ready". 2nd one, the calyxes look quite swollen, hairs look red and shriveled. If I'm seeing this wrong...my bad.
Are they next to each other, or does one get less daylight?
Either way, how about posting pics again in 2 weeks.
I've got three plants in the grow in my sig started and flowered at the same time, all the same strain. One is going to take at least three weeks longer than her sisters. It's called phenotypic diversity.