Can you tell me if my plant is ready to harvest th...

Always judge by the main flowers, not the small budlets down low. Pictures taken under grow lights are impossible to see details with, always take pictures under normal white light. Even so, going by what I can see, I would say another 2 weeks roughly. Once the main flowers have 98-99% brown pistils/hairs, you will be entering the harvest zone.

They need 3,4 weeks I would say. The Pistils should get brown.. Check your trichomes with a magnifying glass or something else..

Has she been in flower for 8 weeks? If not I would target for 8 weeks after she started flowering. You look like you’re 3-4 weeks into flowering. But with no diary and no information it’s hard to say and those pictures don’t show anything that can be properly evaluated. Harvesting too soon is more detrimental than harvesting later.