It may be impossible but do you know any options?

Why? Any options for what? This post makes no sense, although I suspect the general answer is no.

The only sensible way to do that would be to go through a 1+3 PhD where the first year is a taught masters year with mini projects followed by the 3 year PhD. In the UK they are called DTCs.

Thank you!

Why would you want to? You can do a PhD without a masters.

It can be a good stepping stone if their undergrad degree is weak.
Also, DTCs appear designed to ensure the gap between undergrad and PhD is a bit smaller.
If I were to redo my PhD I would look for a DTC route now even with a 1st class.