turtlebot4_ws
ssh into the turtlebot4 and uninstall all packages you would like to install from source.
Next uninstall the robot upstart service using the turtlebot4 supplied python file.
uninstall.py
In setup.sh change the environment variable:
NAMESPACE=<enter your namespace>
next recreate the turtlebot4 upstart service using the python file.
install.py lite/standard