Fear to fall

Today, I pushed hands with a few people. I realized how afraid I was of falling. I knew that I needed to get closer, and was trying to do kua-to-kua. However, every time the opponent tried to come in, I knew the kind of move he was trying to execute, and I would get caught and fell if he successfully got into position.

Since I didn't know what I was to do, I tried to avoid it every time by taking my front leg away. The question is should I? I wanted to get in myself, and it would actually save me work if the opponent did it, but I avoided it instead. I kept thinking the right thing to do would be to let it happen, leave my leg there, and try to find the line/dot and rotate on it. The 2nd person loved to sweep. As his leg came up, I saw a line formed between his front hand and rear leg, however I wasn't able to rotate on it. I guess back to more yilus.