Just don't panic she'll be fine, 17 weeks it's more than four months old, and as I understand the male is some smaller breed that's good too. There's no need to worry she'll do everything just watch her and she will know. If today is day 24 get the nest box ready for her she can kindle on day 28 as well, officially they kindle on day 31 but be prepared. line the nest box with shredded paper and soft long hay on top and make a hole with your hand I am pretty sure she will understand and will start pulling fur. Even first time moms making beautiful nests they know how to, if she's not pulling fur just leave her alone she will when time comes, also you can help her a little bit take a little fur from her belly so kits can reach her nipples. Some rabbits starting nesting early even 10 days before some just the same day just keep an eye on her you will see when she's ready. It's all not that painful and not that long as woman's pregnancy can take 20 mins or less, especially if father not larger than she is she'll be fine.
There's nothing to worry about if there's any complication after just ask here and you'll get advice but as i said giving birth is natural for rabbits and she will know how and she doesn't need and doesn't want you to supervise her so better watch her from a distance and make a quiet sheltered corner for her, where she can do it alone, and the other rabbit if you can move him somewhere she can't see him would be better just less stress for her.
For food I don't know just give her usual hay and vegs and unlimited pellets and plenty of water she will drink a lot, give her an extra bottle or a bowl too maybe she wants to use bowl better. After kindling you can give her some oats to make sure she has enough milk. She will only feed kits once a day for 5 mins that will be enough, but some rabbits do a few times it depends.
Keep us updated and post some pics we love them
If she's day 24 you can probably feel her kits moving in her belly just put your hand there and you will feel the movements, it's very exciting
Tell her she's a good girl and she'll have beautiful kits, let her feel you love her, take her on your lap more often and make her feel nice and loved.
Good luck!