On 6 May 2020, Governor Cuomo was at or near the peak of his popularity. That was in no small part due to the efforts of his brother, CNN's Chris Cuomo, who turned his hour long evening news broadcast into cheerleading propaganda outlet for the Governor. On 6 May 2020, Peak Cuomo arrived. It's been downhill for both Cuomos ever since.
To understand why 6 May 2020 marked the top for the Cuomos, you have to see the following excerpt from CNN's Cuomo Prime Time broadcast that evening:
We can't recall any other media outlet purporting to present objective news coverage shredding its reputation the way CNN did by featuring 1. Clear conflicts of interest, 2. Outright propaganda, 3. Whatever else it is you call this clip. And this nonsense went on for months, begging the question of whether CNN employs any serious journalists, editors, managers, or executives.