I'm four years out. I am a distance runner. I lift and train like a beast.
Did you ever think you would have to work at eating more calories in your life? *smile* Transitioning in to maintenance mode take some adjusting. I used a TDEE calculator similar to yours. It says maintaining for me is 2166 calories. Honestly, I gain weight at the macros it suggests. I can burn 700 to 1000 calories on long run days. My diet changes to support my activity.
https://tdeecalculator.net
TDEE did not work for me. It may work for you. Your calories and macros will look different than mine. (age sex height weight activity is a factor) I had to change up the numbers from the TDEE to find what works for my body. Hate to say this but it has been a lot of trial and error.
All instructions from dietician are different Below is my instructions
Add low glycemic carbs Sweet potato, whole wheat bread/pasta and brown rice. If you are looking to get more calories in, eat small meals often. Eat as often as you need you need to get the calories in and stay within your calories/macros.
Maintaining is a new mindset. It's no longer 3 meals two small snacks. Grazing has always been mentioned as a bariatric no no. Think of this as a maintaining health graze - several meals to hit your maintaining calories and macros.
Wishing you the best,
Jenn