I was doing the thing where I say toe but it comes out thooooooo which causes vibration that opens the third eye. I missed to third day and I need to know if I just need to start over or have I missed my only oppotunity.
I think it's ok if you forgot to do it for one day.Did you experience the pain or dizziness after several pineal vibrations? In my opinion you may do 5x a day and having your mantra thoooooooth as an honor to thoth the moon god and the ruler of the 6th chakra.
After the initial first three days I still continued to do it. I think it's just a practice to raise your energy and wake up your 6th chakra. So no, I don't think that it is just a one-opportunity kind of thing :)
This will not be your only opportunity. Practice with it more, and ease into it instead of taking the first 1-2 opportunities. Try working with energy to slowly make yourself aware of your third eye. I say this because sometimes it can be overwhelming with the senses.
(Not saying you should do this, but sometimes you can irritate it by having someone hover their index finger about the area where your third eye is, and wiggle it...instead of a "come here" motion, do it where your finger goes downward)