Hi all,
My Serissa seems to be having a bad time of late no matter what I try.
Its leaves are brown and dry, I do water it often, it gets a lot of light and is kept from cold, and i cant think of any changes but he's not happy!

It is 13 years old, i have had it for one year.
It seems its too small for the pot and needs more soil, could i add soil around or might it need repotting?
It is green under the bark so it is still alive... i really dont want it to die!!
any suggestions?