Any last minute suggestions for traveling across country (plane) with a 10 week old by yourself? We leave at 6:30am tomorrow morning. (I should probably be packing)

I was feeling pretty good about it up until this morning when DD had an appointment to look at her feet with an orthopedist. I thought it would just be a consult since the pediatrician hadn't been too concerned. Well turns out she has slight club foot that could be easily corrected with special shoes, but the Dr. said it would be quicker and better to do a cast for one week and then the shoes.

So here we are less than 24 hours before our trip and DD has full leg casts. Other than actually having them put on, she seems to not mind them. But I'm concerned they will cause issues while traveling for 6 hours on my lap since she can't be quite as cuddly.

Anyone have any experience traveling in a similar situation?