An account reset and challenge Attempt are two different things
Please note an account reset does NOT restart your time, It brings you back to 100k and resets all your the other stats BUT does NOT reset your time, therefore you have to have at least 12 days left in your challenge to be able to process an account reset since one of the rules of the challenge is you must trade at least 12 days in your challenge attempt
A challenge attempt happens every 22 trading days
Please also note, if you process an an account reset, you will not be able to trade until the next trading day.