Baby has posterior toungue tie.

My 2-month-old daughter has been diagnosed with a posterior tongue tie. She takes expressed breast milk by bottle because she was unable to latch due to my flat nipples. Our feeding therapist has suggested doing oral exercises for one month, and if there is no improvement after that, they may consider a tongue tie release procedure. My baby usually drinks only 20–40 ml at a time and wants feeds every 45–60 minutes. Sometimes I hear clicking sounds during feeding, she cries in the middle of feeds, arches her back while feeding, and seems gassy all the time. Even though she takes very little milk at a time, she has good wet diapers. Her birth weight was 2.7 kg, she dropped to 2.5 kg initially, and at 58 days she weighs 4.2 kg. I want to know if doctors has seen improvement with therapy alone. Should we consider tongue tie release or not? Has anyone benefited from a tongue tie release procedure?