Baby lying Oblique 36weeks

Baby was head down at the top of the birth canal for the last 6 weeks. At the hospital yesterday I was told he has flipped and is now oblique I.e diagonal. His head is up near my right rib, and his bum is down towards my left hip. The doctor said if he doesn’t turn back by 37 weeks I’ll be admitted for monitoring. Has anyone else had a baby in this position before? Did they move back? From looking online it seems less common than transverse.