I’m at about the same age as yours, dropped the seed about the first of March.
I expect it to go 10-12 weeks, it just depends on what the trichomes look like.
If you notice in the description, it says it has an eight week flowering time. If you add three weeks of veg to that, you arrive at the 10-12 week window.
But get a cheap jewelers loupe or macro lens, so you can check the development yourself. I like to use NL for sleep meds, so I harvest at about 50% amber.