You should expect to run into problems sooner or later, depending on several factors, including changes from upgrades to your operating system, upgrading the underlying version of
R or updating packages that have changed to require later versions of R or depending on packages that do so. There are a lot of moving parts.
If you want to keep the version of RStudio that is now working for you, be sure to keep everything else unchanged and you should be all right as far as RStudio is concerned. This may expose you to hazards having to do with unpatched security vulnerabilities in your operating system, for example, and I can't recommend trying to hold on to the past this way.
A better alternative is to "outsource" RStudio by working through
Posit Cloud which provides a web interface to RStudio that operates nearly identically to the desktop. That avoids the potential conflicts I outline above.