https://www.science.org/doi/10.1126/sciadv.adk1189
I cannot understand all of this paper, however the headlines seem to indicate that there is a better than 50/50 chance of collapse by early 2030s. But the data has a curve showing that there is a very good chance between 2037 and 2064.
The paper is still under peer review.
Cheers
Qazulight