When? What are they doing? Reading? Screens? Toys? Reading? Don’t ask or guide them, just watch.
If you have an infant, what are they doing when they are awake and by themselves? Playing happily? Cooing? Reaching for toys? Trying a new skill? Do you place them in front of toys/objects of interest or do they find them themselves? (Answers will vary greatly month to month and even day to day with babies because they grow so, so fast). Do they enjoy being by themselves? Don’t guide them, just watch.