I thought you were switching to the unflavored and was concerned that you had already tried the unflavored and it did not alleviate the problem. However, I just looked back thru the posts and realized that you probably have not had time to acquire the unflavored much less test it.
I should have refreshed my memory before posting. Confusion is one of the results that occur when you get in a hurry. Mea culpa...
I think that the unflavored without the sucralose will help. Good luck.