Dont really understand why you refused medical help and went to your brother in law?!? Sorry dont get it.
Also, whats the reason for such low carbs, certainly you should know that being type 1 diabetic doesnt mean you need to eat low carbs. And low carbs have absolutely nothing to do with controlling diabetes.
Eating 1600 cals a day, with low carbs, will completely mess up your metabolism if you do it for a long time. Even when cutting I would not advise such low values for a male...