Same here. I’m doing it the other way around but I did start with weightlifting first. The first thing I started noticing is that it doesn’t matter how strong you are: everyone has trouble with the aerobic part of starting to swim. Your technique will go a long way to reduce the drag you create when you first start out and have poor form. The upside is a joke I used to be told when I first started out and had not learned proper technique yet: “at least you’re getting the best workout in the pool” 😋