I had an indoor Streptocarpus plant given to me in January. It bloomed for a while & I pinched off dead blooms. Since no blooms have appeared, should I pinch off the stem where the bloom was, as some of the stems are now brown. I may have given too much water, don't know really what I have done wrong Also, should I water from the bottom? I just re-potted with fresh soil. Thank you.