While the top edge adhesive softens, note the following:

There are two ambient light sensors near the corners. Don't insert your pick more than 1 mm here.

The front-facing camera and additional sensors are in the center of the top edge. Don't insert your pick here—there is less than 1 mm of adhesive and you may damage the components.

For everywhere else, don't insert your pick more than 5 mm to avoid damaging the screen.