The upsell flow that doubled my AOV

The upsell flow that doubled my AOV
Trench note: the money isn't on the order form. It's the 3 screens after.

Step by step:
— Screen 1 (post-purchase, before thank-you): 'Add 2 more bottles at 50% off — most customers run out.' One-click, no re-enter card.
— Screen 2: different SKU. If they bought weight-loss, offer the 'cleanse companion.' Logic, not random.
— Screen 3: subscription downsell. 'Not ready for 6 bottles? Lock in monthly auto-ship.'
— Every screen: ONE yes button, one tiny 'no thanks' text link below.
— Timer on screen 1 only. Overdo timers and trust tanks.

Measure take-rate per screen, kill any below 8%.
Go test it.