That's incredible that you got yourself up without help, especially with a back injury - that takes real strength. Stretching daily is the right move, and mornings being tough is totally normal when muscles are still healing. Have you done any tissue work like a lacrosse ball, foam roller, or massage gun on the tight spots? We've got a lower back relief video in the classroom that might help you pinpoint what's tight versus actual injury pain - could be worth checking out to complement what you're already doing.