Turns out that January 22, 2023 is the Chinese New Year – of The Rabbit.
That seems like a appropriate date to get a book about ‘going down a rabbit hole’ ready for publication.
There is also a new working title for the (now) 2023 edition:
The Man Who Mastered Gravity
A Twisting Tale of Space, Time, and The Mysteries Between Them
I’m still not sure about the subtitle, but I’m pretty set on the main title.