Should I being doing less cardio? (personal trainers/exercisers please answer!)

I’ve been running long distance and exercising 5-6 days per week since about age 15, and I’ve been into sports my whole life. I have a very athletic/tone body type and little fat on my body, however I also have small breasts (34B). Currently I do cardio 5-6 days a week, abs 3x a week, and leg workouts 2x a week. I never use weights, just toning exercises. I’ve been thinking about cutting down my cardio/running because I think it would help with my breast size. However, if I cut down to 3 days a week and keep up with my strengthening workouts, would I gain any weight overall? What would be a good way for me to still keep my flat abs and toned legs but maybe gain some fat in the breast area? How much cardio is necessary to stay in shape? I’m just super scared of gaining a ‘pouch’ if I exercise/run less. Any comments are appreciated! thanks:)
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btw, I’m about 5’3”, 126lbs, if that helps
Should I being doing less cardio? (personal trainers/exercisers please answer!)
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