I have no clue, but prospects, especially younger ones, often get better in their weakest areas, because that is what their coaches focus on improving.
I am far from a prospect expert, but I like Jimenez, or in other words, I like what I have read about him.
I would think he'd get better, but he has a lot of getting better to do in that split.
(Also, the sample size is rather small- 60 PAs in 2021 after a full season and 2021 April off.)