Help with updating my TS4 to the latest version?

Hi, about three month ago I updated my game to the latest version of that time which was city living and it works perfectly. now I want to update to the latest version, so I read the "how to install TS4 correctly" and my question is this:
Now that I have the game up to City Living, do I have to install all of those expansions again (from step 1) or I should continue from step 6? because in my country internet size is limited and it's kinda hard for me to download from the base game again.

You can safely install the newer packages "on top of" your City Living.