Is it possible to convert the system installed from ubuntu-20.10-live-server-amd64.iso to the mini.iso-like system?

I have just installed "minimal" system from the ubuntu-20.10-live-server-amd64.iso ISO.
I'm doing this way because there is no mini.iso for 20.10.

I see that this system is very big (4.6 Gb!), has 577 deb-packages, contains Snaps (/snap is 506 Mb), cloud-init package and other unneeded (for me) stuff.

Is it possible to transform such system to the mini.iso-like set of packages?