2x gym workout and 1x pool workout

Good morning ,I've been power lifting for 8 years, occasionally freediving, and I swam competitively as a child. Once every two weeks I go to the lake to dive with scuba gear. I'd like to get back into swimming and ease back into my gym workouts.My question is, are there training programs for swimming as well as power lifting? Can I find them online? I don't know what to do.P.s. my technique is quite consolidated in all 4 styles.