Mitral prolapse + Endurance Training.

I'm 24 years old Male. None in my family has had any cardiac related ailments. I'm from the last 4 years into endurance training (Running+Cycling). In December 2020 i noticed irregular pulse rate. Family physician recommended me to see a cardiologist. I visited cardiologist and after his consultation did 2D Echo and Holter Monitoring Test. 2D Echo investigation revealed i am having Mitral Prolapse. Holter Monitoring Test revealed my heart rate is normal. Cardiologist adviced me to not give strain to the heart by doing heavy activities. He didn't gave me any medication but advised 2D Echo Test once every year. Being into fitness for so long, I want to continue doing mediocre level of Running and Cycling. Is it advisable to continue mediocre level of these activities?