I started using the aligners 48 hours ago. The inside of my mouth seems quite irritated, especially the inside of my cheeks. Will this subside? The expectation was set that I would have this for about a year. I have 21 sets, which would tell me 42 weeks. Any reason why this is off? Is it possible to accelerate the schedule? Also, any chance I can change out the trays faster than 2 weeks if I keep diligent logs calculating actual time wearing the aligners?