How do I uninstall or update R on Linux Mint?

community, I am new to Ubuntu/Linux Mint and very excited to learn about it. I thought it's a good habit to uninstall the old before installing the new R version and double-check.

~$ sudo apt-get remove r-base
~$ R --version

I want to update R base from 3.4.4 "Someone to Lean On" to 3.6 "Action of the Toes" since it is the latest version according to cran-r.

How do I go about updating to the latest R version, and should I uninstall the old version first?