My dark devil auto has just started to flower, not...

Hello ! The best way/moment to transplant autos is to do it when the roots are hitting the bottom of the pot, as soon as the roots are down there you can transplant in a bigger pot and repeat until the last pot. Autoflower are used to induce flowering once the pot is filled with roots (most of the times) . I hope it will help you 😁👍

For your next automatic seed take the final pot after germination. They dont like transplants. Maybe think about airpots there you can transpalnt automatics very well. and for your situation now, i would say wait until she filled the pot and then because 2.2,5 gallon are small for her The best way to get her out of the terracotta pot is to water the pot from the outside and then taking ahammer and smash the Terracotta pot. so the most roots sty intact for growing big and nicely You can let her grow in that pot too , it will be a smaller yield but you dont have any transplanting stress

Based on the size of your plant I'd say your good to go still for some time . The idea is to transplant them the least amount of times you can . With photoperiod plants you can get away with abit more because you have a little more control over the growth of the plant , auto's how ever you do not . The plant will just grow and grow then start flowering . I would advise transplanting your plant at this time so you dont stress her out she's still got lots and lots of room to grow . Remember that what you see on top plant mass wise is the root system you have underneath , you may have few roots that are at the bottom but that plant is far from filling up that put . If you absolutely need to transplant her i would suggest doing it when she show's signs of pre flower this way she can get adjusted in time for flowering without causing an excess amount of stress . When you grow autos it is advised that you take her from her starting home to her final home right away in order to prevent dmgs to the roots and stunts of growth cause like i said auto just kinda go and you have limited time to correct mistakes . I hope this information helps you !-Happy Growing!