Weight Gain Help

I would aim for 200-220 grams of protein per day. You should be more concerned about the kind of carbs you eat given your condition. Slow burning carbs should be the only kind of carbs you consume. But you consult a nutritionist expert.

I think more than 200 g of protein is somewhat excessive. You don't need that much. I do agree with memo about the types of carbs. Guys tell me if I'm mistaken, but Typically it's advised to have about 1g/lb of body weight so for you it would be about 180-200 g of protein per day. Don't fear eating fat either. Especially being that you need to watch your carbs, up the fat, but healthy fats. Peanut butter, olive oil, any oils, nuts, avocados, eggs, milk (whole milk), coupled with fatty meats like red meat, salmon, dark meat chicken, and yes you want to watch your cholesterol too as that may interfere with your diagnosis of DM type II. I would absolutely ask your primary doc to consult with a dietitian, hopefully one that has knowledge of gaining muscle, weight lifting, etc.. I also think 3400 calories is a bit excessive.

I've learned that it's never good to do things in extreme. I used to be really skinny, but now while I have muscle, I have some excess fat that I never had before. Start with 2800 per day and see how that goes if you gain weight too quickly you'll put on more fat than muscle and then you'll want to lose the fat. Aim for about 0.5 lb gain per week or even every 2 weeks, take your time, don't rush, ALL OF THIS TAKES TIME! and unless you want to use steroids (which I highly recommend given that you're DM II that you don't) be patient!