I have had 3 breach bubs right up to 38/39 weeks.. and they all did turn!

At that angle it sounds like bub could be on the way to transverse, and then head down..... hopefully!!!

One thing you could try is frozen veg bags.... alternate between putting it where bubs head is and where bubs butt is.... it seems bub is heading down the left side, so put the cold pack against the right side of bubs head, to encourage him to move further to the left... bubs butt is coming up the right, so put the frozen pack on bubs left side of his butt, to keep him coming up the right side.....
Bub will usually move away from the cold... doing this while in a sloping possy will help too.....
I hope that made sense, I know what I mean....