As everyone says you need to eat alot more.
Generally the rule is: your weight x 18 or 20 = your daily caloric goal. So about 2,700 daily.
Calorie ratio should be similar to, if not: 40-45% carbs, 35-40% Protein, 20- 25% Fat.
Try to eat every 2-3 hours, 6-8 meals. If that’s hard, drink your...