It has quite Indica leaves. for it to stretch that much it would have been rootbound at transplant. I cn't see any soil in the pic, it looks like it's in another pot inside the big pot due to the width of the branches.
You need to let the roots resume growth after this shock. Might be an idea to stake it with a bamboo stick to support it.
When the pot starts to lighten up then you will know that the plant is using it. U want the roots to grow in search of moisture but U don't want it to dry completely on the first few waterings as it will separate from the new soil. Shade is good for the first couple of days. Run off at this point is also unneccessary for the first few waterings. Then u can start with weak veg food and run-off, completely air dry, then water and so on. PH is important. 6.5 - 7.0 pls