Hey mamas so I have a question I am currently breast-feeding my five week old baby I recently added formula to her diet…

Hey mamas so I have a question I am currently breast-feeding my five week old baby I recently added formula to her diet which caused her to start becoming constipated and she's crying more And having trouble going to the bathroom I added the formula because I felt that she wasn't getting full time and I'm not producing very much milk. I really want to just breast-feed exclusively I'm is there any advice that you mamas have for me to start producing more milk? Please let me know desperate mama here!!