Prego bunny advice

Hello! About three months ago I bought a proven does from a near by Rabbitry and right now I think she is pregnant with a litter. This isn’t her first litter but it will be mine so I’m a bit unsure of the signs she is showing. She is eating more, and acting more tired, she sleeps almost constantly, only getting up to eat and use her litter box. Today is her 28th day and she has not started building a nest yet. About a week ago she pulled fur so I gave her a nest box and put the fur inside but she has no interest in it. Is this normal? Should I just wait it out or is something wrong?

I would wait her out. She may start nesting at the last minute. Just give her plenty of hay to nest with

Ok thank you!