How often should I do Pilates Mat?

Stacivogue

I've started doing pilates with my spin workouts. I can feel the difference now, but I'm wondering how often I have to do it for it to be effective. I don't have 1.5 hours to workout. I'm trying to focus on cardio 5 days a week, and do pilates 2x a week. Is that enough to see a difference? It's hard to motivate to workout for 45 minutes of spin PLUS 45 minutes of pilates.