Is the amount of shifting adjustable for one page turn by pressing 'Volumn up/down'?

[h9nara]

If not, please consider the amount of shifting for one page turn adjustable.
It seems like currently, one page turn moves the page up or down an entire screen length in a typical social media scrolling feed for example, Twitter.
However, because of the presence of the top bar and bottom menu bar in the application. The actual viewing area for the content(tweets, posts) doesn't have any overlapping with the area before a page turn. So frequently I have to move back up a little bit after I make a whole page turn.
If we can make the amount of shift adjustable for a page turn, it will solve this problem. Thanks!

[h9nara]

Sorry, this seems to be exactly what the 'Page reserved height' in UI settings is for.