Can physical therapy help cure acid reflux?

No.
You need change your life style of eating. e.g. three to four hours for a light diet. No food taken just before you sleep.

Physical Therapy is not helpful for Acid Reflux. The best solution for mild Acid Reflux is to make lifestyle changes. This includes what and when you eat as well as lose fitting close and raising the head of your bed.

Here is a complete guide to effective lifestyle changes: http://acidreflux.webauthority.info/self-treatment/lifestyle-changes-to-reduce-heartburn/