Hey Cherished
Well, in my experience, the idea of achieving something like the splits can take years. Many of our most highly prized dancers were either exposed to dancing, and thus keeping their flexibility high, from a young age, or they had to work on it for, well, years, like Alethia Austin.
Six weeks seems like a very short time, and a lot of stress on the muscles being stretched.
I suppose it may also be a personal bias, but I found the website to be very poorly written. When I see something that lacks proper grammar, spelling, and/or punctuation, I suppose I don't consider that website to be particularly professional. I wonder if they are just some person talking to the internet from their basement. I would hope that, if they did have professional training, they would seek to convey themselves in that way.
Otherwise... I read something on that website that basically stated "You get the last inch or so through pain." By pushing past the pain and down that last inch or so, you risk doing extreme amounts of damage, the way I damaged my hamstrings, for example, during that yoga class.
I fully admire and support anyone who wants to take on the challenge of this website, and I did my very best to give it a proper look.
But I cannot condone any kind of flexibility, or strength training for that matter, that would advocate pain. Pain is the ultimate warning of your body. Pain can lead to incredible injury. Pain is your body's way of saying STOP NOW.
I endure certain pain with the understanding that I will recover- such as the pain of piercings, or the pain of my pole gripping my skin between my thighs. But, at a certain point, I know to stop. At a certain point, I will cause myself injury. When it comes to muscles, tendons, ligaments (do you know what the difference feels like?) pain is just not an option I can agree with.
And thank you for asking :)
...Sorry for the rant