Hi mindful space and welcome,
I like your forum name, do you practice mindfulness?
Being diagnosed with Parkinson's, starting meds and being off work are all disruptive enough taken one at a time and can be unsettling for both of you. I've done them all but luckily not at the same time. You don't say exactly why your husband is off work but I agree with Turnip - it is worth getting back to work if he can.
One of the reasons that it is hard to adapt to diagnosis is that you don't know exactly what you are facing. Your fears are very likely worse than the facts will be. The condition can progress slowly in some people and the drugs can really help although it can take time to find the right drug regime and dose.
Joining the forum is a step in the right direction as there are people here who have experienced pretty much everything that Parkinson's can throw at you. It's worth speaking to other people in your position. Your husband may get insights from another person with parkinson's that he can't get from anyone else. The same is true for you with another carer.
It is encouraging that you appear to have been warned about the potential for impulse control side effects with some drugs including ropinirole (requip). It is worth taking these issues very seriously. These drugs can be very helpful if you are not affected by impulse control effects.
This video clip might interest you. It was the winning entry in a video competition run as part of the 2013 World Parkinson Congress.
It is relevant to the notion of personality change
I hope that helps. Please keep posting and let us know how you get on