I hate to say this, but you probably can only achieve x2 using AI on the "easy" parts of your work. Going by the 80/20 rule:

  - 80% of your work is easy, and is accomplished in 20% of the time
  - 20% of your work is hard, and takes 80% of the time

If you believe AI can x2 that easy 80% of your work, you have only managed to reduce that 20% to 10%. Someone else can work out that x improvement (1.11?), but it's nowhere near x2.