When a child is clingy, it may be at times overwhelming or tiring, but based on what we know about child development, and specifically, the parts of the brain that help humans keep their cool, assess danger and feel safe, being clingy is actually an age appropriate response to many situations.
It’s ok to respond to a clingy toddler.
responding will not spoil them or make them forever dependent upon being picked up and carried everywhere. A studies support the notion that more attentive care and less stressful separations can improve sleep and decrease “acting out” or attention seeking (bad) behavior and strengthens the overall parent-child relationship.

my cousin said to me IT IS STAGES NOT AGES, if there are no new people/stressors in their life that could create the clinginess, just love cuddle and reassure. They won’t be like that forever!