dotnet-gcforce is a tool that borrows heavily from dotnet-gcdump to force garbage collection on a .NET process running locally. It has the same caveats as running dotnet-gcdump but can be useful for investigating heap growth issues.
dotnet tool install --global dotnet-gcforce
dotnet-gcforce <pid>
The LongRunningProcess tool can be used to test dotnet-gcforce against. It will print its own PID and then sit there logging when the number of Gen2 GC's changes.