저희집에 온지 일주일정도된 라일락나무에요

마트에서 사왔는데 어제부터 줄기가 저렇게 쳐지네요 물도 적당히 주고 햇볕도 받게해주고했는데 시들해지길래 오늘은 출근할때 그늘에 두고갔는데도 더 시들해진거 같아요 어떻게 해야할까요?ㅠㅠ