Just a side note:
If you do this, you will end up with an unusable machine, there’s no two way about it. Manjaro requires you to keep it up-to-date. Read this, it’ll help:
TL:DR
Logout
Press CtrlAltF4
Log on to the system console
Execute command sudo pacman -Syu
Execute command pamac update --aur
Execute command reboot
Manjaro updates
Think of the following imaginary situation
When you use your system or shortly after login - a message appears - telling you there is updates available. When you click the message Pamac opens with the updates pane listing 100’s of packages ready to download/install on your system.
Almost per instinct you click the update now - …
Also , never install updates blindly. Keep an eye on the Announcements section for your branch. There is an announcement, with a list of gotchas and fixes before every Unstable Updates , Testing Updates and Stable Updates .