I just got a "PINK SERISSA" as a gift from a friend. The tree was purchased through "Bonsai Boy NYC". The tree was delivered on Friday but was at the shipping desk in my company over the weekend. I opened it on Monday and watered it since it was in a box for quite some time. Placed it on the windowsill facing south. Tuesday, I watered it some more since the top soil seemed very dry and also brought it out for 6 hours of the day to get it some sun. I then did some reading and found that it wasn't good to keep moving it around so I decided to keep it indoors. There is one single flower and I am noticing some yellowing of the leaves and plucked some of the leaves. The temperature in my office varies from 60F to 75F. Also, the windowsill is near a radiator that won't be turned on until deep into the winter. Any suggestion on keeping the serrisa alive will be much appreciated! THANK YOU IN ADVANCE!