Grade 3 placenta at 30 weeks

Meron po ba dito na same case ko na nag Grade 3 na placenta early (at 30 weeks)? Advise ni OB na i schedule CS ako pagdating ng 34 weeks since one week ahead naman timbang at laki ni baby. Di na ba magagawan ng paraan to reach full term (at least 37 weeks)? TIA