Polaroid Pack film- when the tab breaks- how do I sort them out?

Okay, so I managed to break a tab yesterday, but in trying to fish out the broken tab, I pulled out the wrong one and wasted 3 shots
How do I tell which is the remainder tab and which is the next?
Or am I just supposed to feed the black tab through the rollers, pull that out and let the tabs sort them selves out
Thanks

the first thing you need are big tweezers. open the back cautiously and try to hold the film casette tightly against the camera. you may try to feed the black tab through the rollers, but generally this is too difficult. just pull the black tab out of the pack and forget about this shot. now the pack is ready for the next try. just close the back and shoot again.