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As the child progresses through development, the severity of their symptoms change. To begin with during the early years, feeding issues are the most severe. Infants diagnosed with RRS simply do not/can not associate food with hunger. Infants regularly find it difficult to digest milk at regular feeding times. "Little and often" is key. They find it difficult to progress onto solids, and will often show specific eating habits, preferences and sensory issues. Early eating issues may lead to delays in speech.