My Parkinson's life is so confusing - this is not easy.

I was officially diagnosed with Parkinson's May of 2019. I have been taking Rytary since diagnosis and can say it really does help me feel "normal", but just for windows of time. Sometimes the windows lasts a very short time, sometimes longer. I am not as sharp minded as I used to be. I just don't understand how my body can feel so bad a lot of the time, then feel normal at other times. Does anyone else struggle with accepting this as just the normal life of a Parkinson's sufferer?