You don't say where you are otherwise with the disease. But if your ammonia levels are up, there is a chance that your doctor will have you on Lactulose, which will eliminate the problem. Lactulose stimulates the stomach bacteria to strip out the ammonia and triggers your bowels to remove the result, quite regularly if you know what I mean.
Since cutting out red meat and other iron, and increasing my fruit and vegetable intake, I have been very regular and my platelet count has increased.
I hope that you find a good solution that works for you.
Be well, John
I have to get up the creek! Now where's that paddle?