Are you saying you want to eliminate your dishwasher air-gap and have a high loop instead?

I'm no plumber, just a homeowner that has lived in areas that required an air gap and in other areas that didn't. What does code in your area require?

This article explains the difference:

https://homeinspectiongeeks.com/what-is-a-dishwasher-high-loop-and-why-do-you-need-one/

Simply make your dishwasher drain line make a high loop over the top of the cabinet wall just under the countertop. It is code-approved in about 47 states. Funny how gravity doesn't work in California, but the nanny-state works fine.

Yes, tthere are many videos online how to install a high loop hose. Do a search for those terms. It’s quite simple. Your DW may even alteady have one, but someone installed the air gap anyway because it’s what they’ve done for 30 years, or, you live in California. A high loop hose is superior to an air gap.