Being that I don't have experience with formeron, i don't have a good recommendation for you on that. If you were to run labs again, I'd go somewhere else that can get your results back quicker so you know what your progress or lack thereof is, so you know how to adjust. If I were in your shoes, I'd go with Letro until the es was crushed and then taper down my dosage to let some es come back and stick with the dosage that keeps it at a manageable level. That's just me though. Someone with more experience may have better input.