YELLOWING AND BROWN LEAVES:
If the leaves of your String of Hearts plant are turning yellow or brown, it could be a sign of overwatering, underwatering, or lack of nutrients. To fix this issue, make sure to water the plant only when the soil is dry to the touch, and be sure to use well-draining soil. If the issue persists, try fertilizing the plant with a balanced fertilizer to provide it with the necessary nutrients.
STUNTED GROWTH:
If your plant is not growing as much as it used to, it could be a sign of insufficient light or nutrients. To fix this issue, move the plant to a brighter location or supplement its light with a grow light, and fertilize it with a balanced fertilizer to provide it with the necessary nutrients. Additionally, make sure that the plant is not root-bound and that it has enough space to grow in its pot.