Not sure what you're talking about, with respect to a "stop in production". They are steadily putting out trucks every day, with varying quantities of the TRX included in the mix of Rebels, Laramies, Bighorns, etc.
The 2023's came to a screeching halt last week, and 2024's are steadily being built now. I've heard no rumors of an engine change in the middle of MY2024. The only question mark is whether Ram will accept customer orders, or will just build allocated TRX's through the end of the calendar year.