Rupok, it may be different where you live, but in the USA there is no drug that can specifically halt cirrhosis. They treat the symptoms (such as diuretics for ascites and fluid retention, or Lactulose for elevated ammonia) and suggest lifestyle changes to include low salt diet and no alcohol, to name two of them, which can halt the progression.
A MELD score of 12 here would not get you a transplant. Again, I do not know if it's the same in Asia. Also, a transplant is not a preventative measure as you seem to think. It is A LAST RESORT. There are many things that can go wrong during and especially after transplant, including death. Again, I think it is very premature for you to be considering transplant.
Take the drugs that have been prescribed, keep a low-salt diet, and follow your doctor's directions. Then, in a couple of months, have the labs repeated to find out if they are the same (stable), have decreased (a good sign) or increased (not good.)
Normally, the cause of the cirrhosis is treated. In your case, until you know what caused it, you may not be able to stop the progression. You need further testing at this time to determine the cause of your cirrhosis.
By the way, I am seen at Mayo.
Hugs,
Connie