I have a 5 week old Big Bud Auto growing in soil i...

Could also probably trim some of the lower leaves also after the transplant to give more energy to the buds, as the yellow hue on the bottom leaves show that the plant needs a small amount more of nutrients and without the excess energy consumption of the unnecessary bottom leaves could benefit the plant more than transplanting it. See lollipoping I believe the technique is called. But I would do it immediately after transplant, as transplanting is high stress, on top of high stress training of the plant its self could be too much. Would try to angle the plant most effectively to the lighting and do some trimming before doing a transplant as the plan could definitely grow more in its current location with proper nutes and watering.

Especially if you are only into week 5 again just be careful with the roots. Plants are resilient and even if yours was flowering I believe the transplant would not kill it, but as to how much it would benefit the plant is probably unknown, so I always say give it a try!

I would imagine it would be fine especially if you just dropped it into another, bigger container with new soil and we’re just careful with the handling process to damage the roots as little as possible. I think you would be good to go, but I have only done hydro cannabis. But I have grown tomatoes for years lol in the soil 🍅 although not the same similar in my opinion. Good luck, let me know how it goes. Would be curious to see if it would survive transplanting into hydro at that age, or if it would shock and kill the roots. GL let me know what happens 🦍🔥

No, never transplant in flowering.