In this section
Signs of developmental readiness are a better indicator than age.
Oral-motor skills develop supporting progression of food textures
Side note: Dental development
The age at which teeth erupt is variable. While the presence of teeth enables chewing to be more efficient children who are late to develop teeth can still progress with the development of oral-motor skills though the provision of graded experiences.
But
Carruth, B.R. and J.D. Skinner, Feeding Behaviors and Other Motor Development in Healthy Children (2–24 Months). Journal of the American College of Nutrition, 2002. 21(2): p. 88-96.
Redstone, F.W., J F. The Importance of Postural Control for Feeding. Pediatric Nursing;. 30(2).
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Changing the Physical Environment