Two years old and no green thumb

I like plants. I like having them around. I also have a hit-or-miss green thumb. Out of the plants I've attempted to establish in our apartment, about half have survived to this day. My most recent acquisitions, some paperwhites I grew from bulb, were doing well until recently, when they decided to start collapsing under their own weight....or did they?
This morning I caught J standing on his tippy-toes, pulling at the paperwhite leaves. I yelled at him; he turned and said, "Iss okay. Iss all right.", and then ran for his room.