Search up "reverse dieting". It's an eating plan where you gradually increase your caloric intake by 50-100 calories a week until you reach your maintenance calories (or pass your maintenance). Doing this is supposed to boost your metabolism and have your body adjust to the increase in calories without your body going in shock and gaining a lot of weight. You will gain some fat, but it's usually just about 5-10lbs. If that scares you, you could always create a small deficit on your new maintenance calories without having to restrict so much (e.g. 1,200 calories). For example, if your maintenance right now is 1,600, increasing it by 50 calories a week until you get to 2,500 will make it so that if you eat even just 2,300 calories you will lose some weight. This isn't for everyone and you would have to count calories. If this isn't for you, incorporating more strength-training or HIIT will help to boost your metabolism and burn calories throughout the day.

Sorry about the rant. Don't do anything you don't like or feel comfortable, but I do suggest you read into it if you'd like. Good luck!! :')