What is your UY? It’s hard to answer completely without that.
However, the banked points will stay in your 2020 UY and expire at the end of it,
If you cancel now, they should put the borrowed points back to your 2021 UY as they are making that exception right now..
but can end at any time,
For the 150 2020 UY points, it all depends on if you are beyond your banking window. If you are, then they also expire at the end of the 2020 UY. If not, you can bank to 2021.
Regardless, the 143 banked 2019 points will not be valid for a trip in January 2022.