early days

early days pl (plural only)

1. A time too soon to make a decision or come to a conclusion.
   • 2015, Dave Rigby, Darkstone: The Future May Be Closer Than You Think:

     Lorna liked the sudden transition from urban overcrowding to the rural isolation of Kintrawe House, but she knew it was early days yet.

2. The initial period of an innovation

   In the early days of television, the service was always breaking down.

3. Initial stages of a project.

   Hold on. We're still early days on this.

   • 2010 December 11, Andrew Revkin, “Consensus Emerges On Common Climate Path”, NYTimes.com:

     This is still early days, with more to wrap up in the morning and […]

• (initial time period): beginnings, dawning
• (initial stage of a project): early innings, formative years, genesis, inception, outset