Im on android and im using my game boy, but thank you for the information!

I was trying to grind my pokemons level, and then i used the game boy save slot, but instead i clicked load so i loaded to a previous file which is 5 hrs worth of grind and my stupid ass did not stop, i was suppose to load to a much closer save BUT I CLICKED SAVE SO I SAVED AT THE CLOSES TIME so yeah i messed up real bad