early days

noun[plural only]3

1. •
   The initial period of an innovation

   • In the early days of television, the service was always breaking down.
2. •
   Initial stages of a project.

   • Hold on. We're still early days on this.
3. •
   A time too soon to make a decision or come to a conclusion.

   • It’s early days (yet) to know for certain.