Hi Katherine,
Yes some of the 'meat free' products are very useful. I tend to use them sparingly, as they are processed food really, but added to healthy ingredients they can work very well. The mince alternative is so versatile.
But all of us know what foods\drinks really have a negative effect and most of the stuff I have had to give up or reduce are hardly crucial elements to anyone's diet. Tomatoes is the biggest one to cut down on...
Have you had yourself checked? If you are getting very reliant on Gaviscon is there a problem that may be looked at? Like others on here, with a diagnosed hiatus hernia, omprezole (not sure of spelling!) Should stop acid reflux along with avoiding trigger foods.
Small adjustments whether food wise or lifestyle changes can all add up to help us cope better.