Hi my son is 3 year old his weight is 11.5 and his words are not so clear .can u help me with dis two issues

As I can understand from your question, your child is 2.7 years old and his/her HB is 6. Well, the required range of HB in a 2-year-old should be 11-12gm/dl. Does your child have symptoms of anemia like tiredness and weakness, pale skin, especially around the hands, nails, and eyelids, rapid heartbe....

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

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