as previously posted, I had a problem with my leaves in my avacado plant turning brown, it’s about 15cm tall and was apart from the leaves healthy. I have now noticed the seed or pit of the plant on one side seems to be rotting? As it is soft and blackened. I am not sure what to do to fix this or help my plant as it’s about 6 months old and really hope it doesn’t die as it was doing well. I removed browned leaves.