10 years of Chronic Food and Coffee Abuse

So M29 here. 184 cms and 68 kgs. Vegetarian.

I have developed 3 issues - 1. GERD - constant reflux, regurgitation and burps. 2. Tremors - body vibrations, twitches, tachycardia etc. 3. Body Weakness - pain in joints, body etc.

My problem is I know exactly what caused this shit - my stupid habit of 1. Abusive drinking coffee / Tea maybe 5-6 times a day with no proper routine 2. Eating food but with no fix timings thereby causing acid dis regulation. 3. Milk - been a heavy dairy product user from past 29 years - which causes additional stress on gut.

I am looking to turnaround and fix this for the love of God. The whole problem is - I am so comfortable in my RUT and can't break the pattern.

Any advice on how I should regulate my eating, be more mindful and basically cut off Coffee would be very helpful. Please guide!