You can add all articles afterwards (even though it can be tedious). There is actually a tool that is supported by HAL that makes it easier to quickly add all

You can add all articles afterwards (even though it can be tedious). There is actually a tool that is supported by HAL that makes it easier to quickly add all your publications by just giving your name: https://dissem.in/ https://dissem.in/ For instance, it automatically fills in all the metadata for your publications.