My A1c is 6.2 as a result of taking 2 pills of metformin. Should I now take 1 to reduce chances of liver damage or kidney failure? Please advise.

No. You should continue treatment of your metformin as it is well tolerated. You doctor can follow up on routine blood work to evaluate for the concerned conditions. You a1c is currently right at goal of < 7. If you remain at this range or lower and your diet improves or you lose weight then you doctor might find it appropriate for you to reduce you dose.
Continue. Metformin does not directly cause kidney damage but may cause a rare complication called lactic acidosis with acute kidney injury or advanced chronic kidney disease. Check your kidney function and adjust dose accordingly.