you are on the right track regarding mindfulness, chewing more with mouth closed etc.
along the lines of this, it is important to look forward to the meal - this mental/emotional aspect is key as it sends the message to the body to prepare for eating, which triggers acid production etc.
this article may help. I know with our bland limited diet, looking forward to meals may not come easy, but that is part of the wellness journey no amount of meds or supplements will help with - we have to retrain our brains a bit to help our bodies adjust...
http://www.dreliaz.org/wellnessguides/d ... estive.pdf
Digestion actually begins in the mind, with anticipation of eating, and with the information coming through your nervous system from your senses. Smelling the fragrant scents of food and spices, seeing the colors and textures of the food—this sensory and mental stimulation causes your nervous system to send signals to all parts of your digestive system to gear up for the job of digestion.
The moment food enters your mouth, the enzymes in your saliva start the digestive process. Your saliva contains essential enzymes that begin to digest starches and sugar into smaller molecules, which are broken down further with the help of pancreatic juices and enzymes from the small intestine. Once they have been broken down into glucose, these starches can be distributed into your bloodstream to be used as energy
Tex has written a book about the pancreas and you may be interested to know that Magnesium is a key part of healthy pancreatic function. Keep up the topical magnesium. Especially after your evening meal. maybe do Epsom salt foot soak after the meal and do relaxation activities to optimise digestion before going to bed.
I find that I need at least 3 hours of being 'upright' after eating before I can go to bed.