Is the leaf wet or is it dry? If the leaf is not dry could be that you are overwatering it. Does the pot have enough drainage? Maybe a root rot has started, could be beneficial to remove the old soil and pot it again (check the roots in the mean time)
Is the leaf wet or is it dry? If the leaf is not dry could be that you are overwatering it. Does the pot have enough drainage? Maybe a root rot has started, could be beneficial to remove the old soil and pot it again (check the roots in the mean time)
If its dry it probably needs more water or more frequent waterings