First Time Trying Foam > Rinse > Foam + Wash > Rinse. Great Slickness, But Too Much Soap?

Recently learned about pre-washing and decided to give it a try. I used Meguiar’s Gold Class at a 5:1 ratio, as recommended on the label. My process was foam > rinse > foam + wash > rinse, and I noticed the surface felt much slicker for the wash mitt compared to when I’d just rinse with water before washing.

However, rinsing all the soap off at the end took a lot more effort and water.

Would it be more efficient to dilute the soap a bit more during the first or second foaming stage? And could using this much soap have any negative effects on the paint?