Brief Answer:
please see the detailed answer below...

Detailed Answer:
Hello there, welcome to 'Ask A Doctor' service...
I've gone through your query in details...
I can understand your concern...

Well, first of all, the irritants need to be cut down from the diet as a priority, particularly excessive sour/pickle/deep fried foods. Please substitute them with some fresh yogurts, curd based products (at least for the time being).

The second thing to note if your drinking coffee, you can have coffee, but don't take it in empty stomach as it can further worsen the symptoms. Have a bowl of muesli/ some high fiber oatmeal then have one cup (don't take it extremely hot, just let it cool down a bit and take lukewarm).

-Carefully brush the tongue also. Our tongue harbors bacteria, so daily brushing with a soft bristles toothbrush may help reducing bitterness/bad taste.....

-Please avoid smoking (if at all do) as it can further aggravate these symptoms...

-Drink plenty of water throughout the day, don't let the mouth getting dry, chew some cloves and green cardamom additionally throughout the day

-Eat in small portions but at regular intervals (have 4-5 small meals a day rather than having 2-3 large meals)...never skip breakfast and always have some healthy foods in breakfast (eg. some baked slices of brown/multigrain bread, boiled eggs, oats, yogurt, muesli etc.)

-Try to have your dinner at least 2-2.5 hours before the bedtime, don't lie down immediately after dinner, take a stroll around, maintain a time gap of around 2hours at least before bedtime.

-Additionally, you may take an antacid solution containing Aluminium and Magnesium hydroxide 10ml thrice daily after food) and observe how you stay afterward

-Since it's been 2weeks already on Omeprazole and still symptoms recurring, it can be replaced with a more potent and longer acting PPI like Rabeprazole/Esomeprazole. Please discuss this with your Gastro.

Let me know if I can assist you further.

Take Care
Kind Regards

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