I'm starting a marathon (1st marathon) training plan and will be running 6x/wk. I won't have a lot of time outside of that to swim. I'm a slightly above average swimmer. I will only be able to swim 1-2x per week (more likely only once). I plan on using it more as a recovery swim. Would you recommend more of an interval/strength workout or distance/pacing workouts. I was doing 3x/wk during my in season training (1 speed (i.e core set 15x100s), 1 stroke/drill, 1 distance (core set 2000 straight or 2x1500)). My swim definitely got better. I dropped my 1500m olympic swim (both wetsuit legal) from 26 to 22:30 in about 6 weeks (probably half of that was improved sighting). What's the best strategy to just maintain closest to my end of season form?
https://www.strava.com/athletes/23685202
https://www.strava.com/athletes/23685202