Universal font size suggestions for 'responsive' design from H1 - p - Help?

Hi All

I’ve been pulling my hair for quite some time in trying to establishing some ideal font ‘sizing’ system for the ‘Site Typography Styles’ in Wix Studio, running from H1 right through to P (paragraph) along with their respective ‘Minimum’ sizes (I don’t use Max sizing), for 4 screen sizes. (1) High res monitor (which I have as above 1802px and above, (2) Standard Screen (which I have 1801px and below), (3) Tablet (which I have as 1000px and below), and (4) Mobile (which I have as 750px and below).

As an example, at the moment, I have the following:

H1 - 56px
H2 - 42px
H3 - 31px
H4 - 24px
H5 - 18px
H6 - 16px
Paragraph - 22px

The issue with these though, are that the way Wix Studio Scales down fonts (when Scaling is selected), the lowest screen size (4) Mobile (750 px and below) then delivers those mentioned above as:

H1 - 12px
H2 - 9px
H3 - 6px
H4 - 5px
H5 - 4px
H6 - 3px
Paragraph - 5px

which are obviously way too small.

So given this what should the ‘Min’ font sizes be for each of the H1 - P afore mentioned for Mobile?

I’ve trawled the internet and haven’t found any answer as yet to this type of question.

Any help would be greatly appreciated.

Stephen