I began growing this avocado seed around 2 or 3 months ago and it's been growing like crazy. I saw a video where this guy was adding potting soil to his cup gradually to give the seed nutrients, but I've also seen people who've been successful without doing that. I wasn't sure if my seed is fine without it or if it would be better if I added some soil. Also, the root won't stop growing and I don't know if I need to keep transferring it to bigger glasses (what I have been doing thus far) or to just allow it to grow in the glass that it is in. I would really appreciate some feedback!