Macro Trouble

LiftEatSleepRepeat_

Hey you guys, I've finished insanity now I do the month two videos every day. I pick two sometimes even three videos a day and do them. I burn a really good amount a day. I went to the doctor this morning and he told me I need to up my carbs and lower my protein. Before, I was on 1400 calories a day, 40/40/20 diet. So I was at 144g protein and carbs with 34g fat. But now, the doctor told me to up my calories to 2000 a day and do a 50/25/25, 50% being the carbs. Do you guys think this is a good idea? I'm 14 years old, burn roughly around 1780 calories a day(not for sure) and my numbers would look something like this based on what the doctor told me to do. 250g carbs, 125g protein, and 56g fat.
Any comments are greatly appreciated.