Teen bulking diet. Do you approve? You're acutely underweight as over 99% of the males of your age and height weight more than you do. (See here).
Teen bulking diet. Do you approve? I'm not sure why. Can you try closing your browser, then open it again and then try clicking on the link to see if it works? I think it's a very good idea to talk to your biology teacher and/or school guidance counselor about your underweight.
As long as you have goals, that will motivate you. But it is also important to just gradually gain/lose weight, as it would help in the long run. Eating too much or too little would be incredibly unhealthy, and you will risk getting multiple health problems by just trying to gain/lose weight. Hopefully you made the right choice and take it slow, because even though it will take a while longer, it will also stay longer, as your body would have adapted to the new lifestyle by then.