My bp had a mostly 1 piece shed recently too. A piece was stuck on his tail. Fortunately, a quick soak got rid of that. But I did not do this until after 24 hours later. It is stressful for your snake and there might still be natural oil in its skin to finish the shedding. Thus, I read it was recommended to leave it alone for 24 hours before stepping in. My bp did manage to get rid of some by himself prior to the soak.

If my bp still can't get rid of it after a few more soaks, I would have left it alone as long as he eats and just increase the humidity. It takes several stuck shed cycles for a stuck eye cap or other stuck shed to become a problem. What does not come off now may do so in the next cycle. If it is interfering with your bp from eating, then I would continue to try to get rid of it.