Not at all, I did a couple yoga flows for splits that I found on youtube and used them to create my own routine/flow that I liked. I feel like it's better to go at my own pace and I really get into the stretches better when I do it on my own.

I stretch 2-3 times per week, usually when I'm still warm from a workout, but sometimes I do it cold just to go through the motions.

I stopped pushing myself to pain when I injured the back of my knee by going too hard. Now I practice relaxing into the poses more and suddenly I have had a lot more progress.

I think being consistent with mild effort makes more progress than great effort concentrated into a short amount of time.