Are you healthy, eating a balanced diet and happy with your appearance?
If so, you can plan to increase your current daily calorie count by around 250-300 calories without increasing your exercise.
Then gradually introduce a maximum of two daily cheat days a week where you eat your favourite takeaway meal or a high sugar snack/drink.
Maybe with a few daily youtube workouts
I'm 5'1, 26 years old and have been on a lower daily calorie limit for many years.
I'm size 8 and the same weight I was as a 13 year old.
Mostly homecook my meals from scratch, eat twice a day and have never been a gym member.
I make my own bread, chocolate and vegan milks.
Enjoy consuming spirits, beef, chicken, caramel shortbread, pizza and spicy asian foods.