There is some good info out there to read up on for sheds and such. I bought "The Complete Ball Python" a book by Kevin McCurley.

I'm waiting for my son's snake to shed. We are getting ready for feed #3 soon. The other signs I've read about are a dull look to the skin, and sometimes scale separation. Others can chime in here as I'm NOT even close to an expert.

You could set up a humid hide if you think a shed is close. Let me know what happens because we are still waiting for a shed.

Hope your thermostat works well. I was given advice to get a Herpstat II for my son's setup. I couldn't be happier with the results!!