Asking older kids how they feel

So, I'm due in 4 weeks with baby no 4. My older kids are 9 year old twins and a 6 year old. They seem pretty excited about baby, but last night I thought I straight out ask them if they were nervous at all about baby. They said no. I then asked them if they were worried about me giving the baby more attention than them. One of my 9 year olds said, "no, you don't really give us that much attention anyway." 😂😂😂. (Just for the record, we do so things together, but they are old enough that they prefer to play with friends, read books, or play with toys on their own over playing with mom!)