How to preference a flow over other flows

Hello Klaviyo community,

I’d have 3 flows. 

1. New Subscriber Flow - for anyone who signs up to my mailing list (incentive offered)
2. Welcome Flow - for anyone who makes a purchase to introduce them to our brand story and our various collections
3. Abandoned Cart Flow - for anyone who starts checkout but doesn’t complete the purchase.

If someone signs up to get the opt-in incentive and clicks the shop now button from the first e-mail in the new subscriber flow but abandons their shopping at checkout.

I’d like to stop the new subscriber flow and prioritize the abandoned cart flow as it shows higher purchase intent. 

I’ve searched the help centre with keywords prioritizing a flow and preferencing a flow with no conclusive search results. 

Could anyone help me by letting me know how to achieve this? 

Would appreciate any help.

Thank you!