I'm with you there ,Linz,and I don't have the SPD to deal with.Saw my mw yesterday,and I have an upside down pudding in there too.His butt is where his head is supposed to be,so lets just say it's not to comfy.Could hardly walk from the school to the van today.Apparently aside from the lying with your bum in the air legs at 90 degrees plus for 15 mins every two hours,which of course I'm going to do,and you certainly can't with SPD,an icepack on baby's head might turn him.Can do that sitting with my feet up.The best one I heard was sit on a pair of headphones and crank up the volume.Hmm,worth a try.
As long as I'm sitting or lying there's no problem,it's just when I stand up it's like gravity kicks in.
Oh,well not long to go