This must be worrying for you Elio, has your t given you any clue that there will be a boundary change or do you just feel something is happening between you?
I noticed with ex t she would schedule me every second week and said she was too busy to see me every week and also when I would text her between sessions she would just reply can we talk about this when we meet again? Usually she would respond to my anger and welcome it. I noticed she was very burnt out and wasn't coping with her workload very well. It tainted our relationship after three years and lead to many ruptures. I remember how my t used to be and she was always available and would offer support between sessions but as she got busier her self care came first and she tightened her boundaries. This is a good thing for her but left me feeling abandoned and like I was a burden to be kept at a distance.