[drache]

I can't remember when it was you posted
sometimes one of my adult snakes will have two sheds just a couple of weeks apart
it's rare and it's usually because something else is going on
one of my newer snakes shed three times during the first month, but that was because he needed to shed out a lot of damaged skin and gain weight.
yours may be going through something similar, since the shed before last was a failed one - perhaps the one after that wasn't as perfect as it looked
either way I wouldn't worry about it