Caroline is right...you have everything to lose by continuing with the secrecy.
If you come off the Requip it needs to be slowly reduced to prevent withdrawal symptoms, then the Sinemet needs to be gradually increased.
I won't lie and say it is easy but in the end my husband has better control of his symptoms than before.
Neurologists were swept up in the fever of advertising and bribes when the newer drugs were first produced and the side effects hidden by the profit-driven manufactures.
Now it has been forced out into the open many are rethinking and going back to the older, safer but less profitable drugs like Sinemet.
Perhaps you could tell your wife that you love her very much and can't find the words to tell her you are troubled and need her help.
Then ask her to read this page.
Together you can stop this before your lives are ruined as ours were.