Make sure you really secure it in the new pot. You don't want any bumping of the tips of new roots. It is so stressed that any new root growth will be needed. If it wiggles, the root tips become damaged and cannot recover for it to take up nutrients.
Pot clips would help if you have them.
http://2.bp.blogspot.com/-zR22...
https://www.youtube.com/watch?...
