training suggestions

hello people i am doing tae kwon do since 5 months and i really think my flexibility process is going slow.I really expected waaaay better results.



I wonder if the stretching trainings we are doing in class are bad or its just 3 days per week is not enough for results i expect.



Could you please any of you that understands stretching goodly send me a good stretching training video or guide ( with pics ) to train everyday