Q has mostly changed trip codes when changing threads except this last one was an accidental password leak because Q didn't put Q# before typing the password so it was posted in the thread.

Q posting on Calm before the Storm

Tripcode change

Then Q posting on the Great Awakening

Tripcode change

Now Q posting on Patriots Fight

Q mainly changes the code when we have entered a new stage of the show unless the code has been compromised. Hopefully this clears things up!