At this time of year, the tension and posture-related forces, rather than the lack of flexibility itself, are blocking the "hidden flexibility"!
If you're training with the point of posture, not just repetitive training, you'll feel your flexibility skyrocketing in the beginning.
After that, flexibility will be developed very slowly!
You may feel frustrated because your skills don't improve well, but from the beginning,
It's a sign that the body's alignment is starting.
It will be an opportunity to enjoy the process!^^