Use LVGL as not fullscreen and stop it or reuse it

I’m new to using LVGL,I’m looking for a way to display only a portion of the LVGL and the rest to be drawn on LCD.What I want to achieve is to switch the UI drawn by LCD, LVGL only uses the Roller, and it may be possible to switch to a different LVGL screen when switching, or not to use LVGL for the time being. At the same time, these two are on both FreeRtos threads.The screen only uses touch, and I don’t know if this is possible. If so, what does the proposed solution look like? Is there still page management where feasible?