I would also recommend to keep on trying. You can also look into RC seeds as another option. I have had good results with them and no tripping. The thing with mushrooms is you can have 2 that grew in the same batch next to each other and one be twice as strong as the other. Some will grind them all up together, mix them and put them in capsules to try to even the dose out.
My take on this is yes, I would continue. While 3 times gets trotted out as kind of an average number it may take to completely bust a cycle, a hard stop at 3 typically isn't recommended, if the attacks are still continuing. It tends to be more of an "as many doses as it takes" protocol.