Jetazzzz...

I would:

Continue your current regiment.

1/2" in 3 days is not bad......you would like to get it to 1/2" a day....

Keep on tracking her.......

Sometimes, you will be able to see pre-flowers for the females...sometimes you wont. Just the luck of the draw it seems.

A male plant can be smoked......it can get you high......

But only use it for getting high if you have no other smoking materials....its not a very good buzz.....but you can get stoned off it...no doubt.

I don't ever test the soil pH.

Good grow soil already is set at an acidic value......I just water it with 6.8 adjusted water and the soil pH tends to itself.

Looking good if not slow, but coming along.....

Keep tracking and updates......

HARD