It could easily be transplant shock. If you feel brave you could cut all stems back to the earth, give it a big drink of lukewarm water with Epsom Salt (1 TBSP of Epsom Salt to a gallon of lukewarm, not hot, water), mulch it very well (2 - 3") and wait for the new stems to arrive.
About how many hours of sun does it get. Clem's don't have to have full sun to prosper so don't let that concern you.
