How do the other 2 look ? And when to harvest?

week 6? your 2-3 weeks away yet from harvest minimum. 8 weeks is the very very minimum for harvest if you had a perfect grow with no issues and its an indica dom strain. 9 weeks is a more realistic time frame. So keep in mind it the last 2 weeks of the flowering process that the plant packs on the most weight and the most potency. So DONT get too keen and harvest too soon. My advice is wait 3 more weeks if you can ok. 2 min but 3 be much better.