I haven't been blasting and cruising for so long, I've only had one cruise so far: 5 weeks at 125mg test e, which was after a test and deca cycle. While cruising, I ate only 150g of protein and I dropped the number of sets in my training.
I dropped 5lbs or so, which I think mainly consisted of water from deca. Strength dropped a little, mainly on heavy compounds. 10% at most, though.
Don't up the calories bro. With 200mg of test in you, there's no way you will be losing muscle.
In fact, I recommend you drop the kcal and especially protein. Do a smaller number of sets as well while cruising. Let your body relax for a couple of weeks.
Then when you start blasting again, up the kcal and the sets to shock your body into growth.