bunnies actually shed four times a year. twice heavy, twice light, alternating each time. when they shed, the amount of fur is quite ridiculous. it’s best to brush everyday during this time b/c bunnies cannot vomit up ingested fur. too much can cause a blockage (tummy troubles).
the best way i have found to groom is up high on unfamiliar territory (on a counter or table). if you’re on the ground, the bunny will run. up high they *should* be too frightened and confused to try and get away. for extra security, you can put the bunny in the bottom half of the pet carrier. in my kitchen, we have a counter that has the back-splash in the back and a wall to the left side. i stand right in that little niche, this way i only need to watch the front and the right hand side. brush the bunny thoroughly. you might want to wear a face mask if the fur is very bothersome to you. have on hand a couple damp paper towels and after the brushing session, rub them over the bunny to pick up the loose fur.
it is normal that they will shed in different spots at different times. during a heavy shed, you might be able to see a line that will creep across your bunny as the new comes in and the old falls out. it’s not likely that she will like it, so don’t expect her to. during a shed, the best thing is to do it everyday, for no longer than 5 minutes, and give her a treat afterwards.