Teens in a building state often go quiet or sharp. The signal can be easy to miss or easy to misread as attitude. The prefrontal cortex, the part that brakes emotional responses, is still developing, which means the gap between "I feel it building" and "it tips" can be very short. Add sleep deprivation, social stress, or accumulated pressure, and the window shrinks further. The most important move is yours: stay regulated. When building states are frequent, check which of the three Cs has gone quiet: where is this teen lacking genuine autonomy? Where is the relational connection depleted? And where are the demands exceeding their current capacity?
I am not going to make this bigger. I am just checking in. Are you okay?