I'm a 15 year old teenager, I am terribly underweighted due tot he fact when I was smaller I had nutrition issues (Skipping breakfast on most days, not eating consistent food, eating junk food, etc). Since last year I've started to recover and I've tried to regain good nutrition habbits. I've started eating breakfast each day at specific hours (This applies to dinner, lunch too) and eating snacks between them sometimes. I eat very consistently. For example one of my days menu is like this: 2 slices of toast with butter on it and a mug of milk, a few nuts an hour later, a plate of fried potatoes with steak for lunch, corn-meal with cottage cheese for dinner, and always eating something on bread after dinner.
I also love riding bikes, I have a bike which I ride every day during summer mornings for about 30 minutes or an hour. I do push-ups in the morning after I wake up, however all this isn't helping by much.
My current weight is pretty drastical, I admit, it's actually terrible: 50 kgs on 1.84m height at 15 years. Yes, it's a terrible weight, and I'm supposed to have about 65-73 kgs at this height and age.
However with all this workout, school, push-ups, eating proper meals at proper times every day has only helped me gain 3 kgs. I started at 46-47 kgs and now I have 50. It feels terrible to be this skinny and everyone is telling me to "bundle up".
My question is, what advices can you give me? Am I doing something wrong? My aim is 60 kgs. 70 kgs would be ideal. What should I do? Should I eat more? Should I exercise less? Should I eat more consistently?
Please share your advices as to how I could gain weight and how I could gain some muscle mass.