Correct. IRCC hasn't been accepting interest to sponsor for PGP after 2020. And they have been drawing and sending invitation to apply from that 2020 pool.
You will need to wait for them to open up to get into the draw and we do not know when. (if it's available again, it would be 2024 and likely at the end of the year but we don't know)
At the mean time, make sure that your personal income (NOA) meet the income requirement in the pervious and up coming year. Then once the pool is open, you qualify to enter.