Shanghai, Basel, Paris, and London... oh and Laver Cup too!!
Luckily Laver Cup is only BO3 Format with a super TB in the 3rd. Also, I think it states that a player will have a max of 2 singles matches. So 2 singles + doubles with rafa shouldn't be too strenuous..
I think if he did really well in Shanghai and Basel he should consider skipping Paris and focus on WTF prep. Don't go chasing the #1, we know what happened in Montreal..