Magnum Auto

Heat and humidity issues persisted through the week, clearly causing some stress with wrinkly twisted leaves, but the A/C is now fixed and temp/RH are back to normal. Big stretch this week, almost doubling height. I did two sessions of LST (days 30 and 33) and tied down some of the shade leaves on day 35. Here's a question. This plant is now 5 complete weeks old without showing any flowers, so clearly the breeders advice of 55-65 days is likely out the window. So, at what point do I say to myself "Maybe this isn't an autoflower after all" and switch it to 12/12?