One thing that is true about diabetes is that we are all different. The <span style = 'background-color: #dae8f4'>dosage</span>s
that works for one person might not control another person's blood sugar or might result in disasterous lows. insulin
dose is not determined strictly by weight, that is only one factor. You might want to get a copy of Using insulin
by John Walsh or Think Like a Pancreas which will help you understand and determine both basal and bolus doses. What you don't say is what your nephew's blood sugars are like.