If the capability to eat/grind hay without pain is there, there is usually ways to get even the pickiest of rabbits to eat some hay. Some approaches I think about are:
1) Big time spaces between non-hay feeding items. For veggies and pellets, feed only one or twice a day, at the 12 hour interval or more so the majority of the day is spent with only hay as an option. For example, some people feed veggies in the morning, then don’t offer non-hay food until one pellet serving at night.
2) Consider when you freshen hay and your rabbit’s “active time”. If you know your rabbit is usually active at 6PM for example, it may be good to change litterboxes before then so when the rabbit is active and ready to forage, there’s really pleasing stuff there to look through.
3) Hay toppers – Some people buy hay toppers, which are mixes of dried herbs and such that you toss into the hay so it makes the entire pile seem much more attractive. It gets a rabbit rooting through the pile, which they might not have done in the past, and may encourage them to begin that nibbling/tasting process!
4) Think about how many sources of hay are around. Rabbits are foragers, so they look for the best pieces to eat; therefore, if you offer more, there’s a higher chance they’ll find something. If you offer more locations, they’ll find “best” strands in each of those. Wick’s hay consumption has drastically increased since he has 8 hay feeders now instead of only 4. When he’s bored of one location, he’ll go to the next.
5) Give time for curiosity to blossom – There’s an idea that when people find the hay their rabbit “will love”, they will immediately gobble it up in the first day. A lot of times with new veggies, fruits, and generally all foods, you’ll find some rabbits initially turn their nose at them for a while. Then, one day they get a bug to try it, and that’s what starts that new food appetite! For example, I left a bunch of apple sticks just lying around for decoration for Wick, and after passing by and sniffing them for a while, he decided to start nibbling! So give each hay a chance, maybe in different locations.
I hope this helps!
The answers provided in this discussion are for general guideline purposes only. The information is not intended to diagnose or treat your pet. Seek the advice of your veterinarian or a qualified behaviorist.