I've recently gotten a young Ice cream banana and am having a lot of trouble with leaves staying on it. Since I only have a small window on the North it is next to that and the other side has a grow bulb to make up for missed light all of the leaves that are young stay green until another comes out then they turn yellow and eventually brown so the plant never gets more than 4 or 5 leaves. Is this normal and is there anything I can do about it?