Can we get a flat belly just by running every day, without doing any crunches?

if your son has started speaking monosyllables, it is an okay start. you need not worry. any other learning disability that you know off?

High fiber low fat diet followed by detox diet is the best diet for weight loss.take plenty of water everyday. Take small and frequent meals at regular intervals. Avoid outside food completely. Ask me directly for customized diet plan for you. 

please read the link below for detailed information on the condition. https://ghr.nlm.nih.gov/condition/bardet-biedl-syndrome