As everyone else has said- chop her! You won’t do any harm by giving her 24-48 hours of darkness....but if it were me I would just take it down. 50% amber is a touch over ripeness in my opinion. BUT if you like a more relaxing couch lock high, the more amber the better.
The 3 lifecycle stages of a trichrome:
1. Clear Heads- still maturing and developing the highly coveted cannabinoids. Not very potent.
2. Milky Heads- this is believed to be the peak thc point. If you want a strong “heady†high, similar to sativa affects, then this is optimal time to harvest.
3. Amber Heads- this indicates that the thc has been broken down into CBD/CBG which will give you less psychological affects, and more physical relaxation affects.
Most growers believe that harvesting at about 30% amber and 70% milky is the ideal window to harvest. The fun thing is everyone has their own preference and you can customize your high by harvesting at a certain point. Hopefully this helps.