Hello,
i am using Mini Cart Style:Beside products and have a long product listing, i can only reach the checkout button when scrolling to the end of the page. You can test on my page: https://restro.hang-duc.com
It would be better to optimize checking out, if the check out button always shows. Actually, if you can move the check out button to below Subtotal line, that would do the work.
Or here is another example: https://prnt.sc/xNHKjSO9HEKM
Checkout button always appears.