Greetings I would not give up ever. I have read that deficiencys can take time to replace. I would drop all beverages with caffeine including coffee and tea. I don't think I would want to push too hard in the center there. I would also want to explain that to the doctor in case they wish to check for a bruit or an aneurysm in case it got weakened from pushing too hard. Vinegar in the dressing might be an issue. I would also be sure that when raw vegetables are eaten that they are chewed thoroughly to nearly cream consistency.