We don't know if BLSC needs to close early or not.
**IF** KD decides to proceed with a Jungle X Phase II for 2023 and it involves a theme makeover for BLSC, then the park could do that after Haunt is over, during the off-season.
If the re-theme is more involved, then KD could shut the ride down right after say Labor Day weekend. There is no major advance notice to a ride closure. They could say the week before LDW that get your last rides for the season on BLSC before it shuts down for 2022.
I am pretty sure if KD expands JX for next year, most of what I could perceive happening for 2023 could be done in the off-season. Just not sure about BLSC based on the level of thematic overhaul they want to do.