Judging by your pictures, I'd say you still have afew weeks left till harvest.
Looks like a nice Sativa you got there....might be many weeks
But the person who told you 1.75oz...forget that! you prolly have that right now.
Your worst enemy at the moment is the height of the plant. A 400w would have been nice from the start, with some training, but now it looks like you have an outdoor plant gone indoors at the wrong time. Penatrating the bottom branching structure will be difficult.
Do as mentioned and harvest the bud when need too. because of the situation that will be your best bet. This plant wont finish all at once.
Good Luck
Ps ....Anytime now I'd be willing to bet the weight is going to start to come on. Get yourself some nutes, and put her on a heavy diet for the next 2 weeks.