Placenta previa questions

I just had a few questions and looking for peoples own experience. I am being followed by my dr I see her again next Tuesday. I am 23 weeks pregnant with my 2nd, my first was a c section I’m 34 and healthy. Last week at my anatomy scan the ultrasound specialist (my sister has a chromosome issue so I get to see the specialist) he told me I have placenta previa and I will follow up at 28 weeks with him. I know exercise is not allowed but what about light yoga or stretching my back is killing me. Also I have been googling bad idea... and over 50% of moms with placenta previa deliver early... did you? Any other tips, tricks, insight I would be happy to hear. Thanks!!