It is what it is.
Your sugar daddy wouldn’t be in a relationship with you if he couldn’t handle the idea of having you as his gorgeous, much younger girlfriend. He also knows that all relationships, no matter how delicate the kid gloves are, have their ups and downs.
Few things can get in the way of sex like a good, old-fashioned fight. Keep your arguments light; don’t make them too emotional. It could be seen as a sign of weakness, and you don’t want him having to come to your aid. That will just lead to make-up sex, which is what you’re trying to avoid.
Be thorny, not prickly. Make it trivial enough to get you a one– or two-night reprieve, but not so petty that he won’t bother participating in the argument. And catch him off guard—sit casually in a chair while watching TV, look over at him, and lob a beef you’ve been holding back on. Then stand up, with your hands on your hips, and leave the room. Since you only really care about the one side to the story, you don’t need to sit around waiting for his rebuttal. Tell him that it is what it is, and that you need some time alone to think. That will really help drive the point home and if he’s smart, he’ll know to leave you alone for a while.