>>641208Just lightly tap the stem when the flower is fully open. That should be enough. If you have an electric shaver (or vibrator), you can tap a stick to it, turn on the shaver, and tough the stick to the stem near the flower. The instant you vibrate it, there should be a falling dash of pollen from the flower. Be careful about touching the flower itself as it can easily fall off. A constant breeze from a low fan will help prevent leave and flowers from falling off when they get bumped lightly.
I used that method with my peppers for last winter. This is what they looked like. You can see snow in the background. I'm not keeping anything indoors this winter.