It was filmed 3 years ago because the release was delayed due to the pandemic. They didn't want it to flop because people weren't going to the theaters.
It was finished filming almost a year before they started shutting down movie theaters for the pandemic and they didn’t release promotional materials back then.
So, that pushes the earliest summer release as 2 to 2.5 years after filming each scene assuming COVID actually delayed things.
You can see they had settled on June 2020 as the release date, but, you know what happened next. That release date was fully locked in until it became clear COVID wasn't going away.
There were other, earlier delays: the film was initially scheduled for 2019, but they spent most of that year doing reshoots.
So, that pushes the earliest summer release as 2 to 2.5 years after filming each scene assuming COVID actually delayed things.