I think you should separate mum from the kits because shes being aggressive. Then you have to help them feed once or twice per day. You’ll need to hold mama bun so she doesnt hurt the kits while they feed. If mama bun isnt feeling well (the sneezing) the kits could be annoying her. The kits should be placed in a box that they cant accidentally climb out of, and be covered with fur from mama bun or bedding and hay. Mama buns don’t lie with their kits like dogs and cats do, and they only feed them once or twice per day, but you must have noticed that already, since it’s been a week.
Please note that the subject of intentional breeding is prohibited on the Binky Bunny forums. Because of this, we don’t have very many members with baby bunny experience. There is another forum, Rabbits Online, that has a section dedicated to breeding, the Rabbitry and Showroom. Here’s a link to the relevant section: http://www.rabbitsonline.net/forumdisplay.php?f=20 Rabbits Online is an active rabbit forum.
Here are four links with baby bunny info, from our resources page:
http://www.bio.miami.edu/hare/surpriselitter.html
http://www.rabbit.org/care/babies.html
http://www.rabbit.org/care/newborn.html
http://www.mybunny.org/info/caring-for-newborn-baby-rabbits/
If mama bun sneezes a lot she could have a respiratory infection, and there is a high risk the kits could catch it. Do you see any white or otherwise colored discharge around her nose? If there is, you should contact a vet. Bunny “colds” are most often caused by a bacterium called pasteurella multocida. It’s as a rule treated with Baytril (enrofloxacine).