When do I start harvesting? First grow bag. Been fruiting about a week.

Hi there, this is my first grow bag as I’ve stated in other posts. The strain should be Thai elephant. I’m wondering when I should start harvesting. It’s been around a week that they have been fruiting. Here’s a picture from this morning. I see the cap has opened on at least one there from what I can tell. Was wondering when you thought I should start harvesting. And wondering if I should harvest one or two at a time with a scalpel or wait and do the whole bag?

Hi there, this is my first grow bag as I’ve stated in other posts. The strain should be Thai elephant. I’m wondering when I should start harvesting. It’s been around a week that they have been fruiting. Here’s a picture from this morning. I see the cap has opened on at least one there from what I can tell. Was wondering when you thought I should start harvesting. And wondering if I should harvest one or two at a time with a scalpel or wait and do the whole bag?