I don't know if there are some critters outside, I only see the neighbor's cat, but very morning I find broken leaves, they are borken at the bottom but still attached to the plant..
I will grow the seedling indoors because there's no shelter and no protection outdoors.
Thanks
@beckygardener for your suggestions on fertilizer. The little seedling is as you can see in the pic, when should I put in potting soil and start fertilizing?