Days 30 to 60. This is where it starts to compound, and the secret is almost boring: rhythm beats effort.
You don't need a giant push. You need to not skip weeks. So set a simple cadence and let it run:
Every Monday
Check what moved, and grab this week's quick wins.
Once a month
Catch the pages starting to slip and refresh them before they fall.
Each quarter
Redo your roadmap and see where your AI traffic is heading.
That's it. Most people quit around week three because life happens. Don't be most people. SEO compounds, so showing up every week beats any single heroic effort.