Sue idea is excellent. My last rabbit (passed away in July) who had a lot of stomach issues refuses to eat hay. I also try everything. He just won't eat them. But if I put some hay in his mouth, he will break down the hay. So you can try that, it would at least cut down his teeth. He will do it, as rabbit loves to bite things. You stick hay to his mouth, he will bite it off, guarantee. Just keep at it 3 -4 times a day.
But learning from my last rabbit, hay is vital to his health due to the high fibre contents. So if he won't eat it, then the next thing to do is Sue's idea. Swap 30% basic T w/ his regular pellet for 1 week, then 50/50, then 70% basic T and 30% regular, then 100% basic T. Basic T is very good, from Oxbow. That would take care of the high fibre problem.
One thing I did try is to give him a slice of apple, and puncture the apple slice w/ hay, then cut it, and repeat the above. In other words, you would have a lot of puncture holes on the apple slice via the hay, so you hope that your bunny will pick up bits of hay when he eats the apple.
You can do that will many other fruit. For e.g., a slice of pear mix with bits stroke off from the seed head of timothy hay. In other words, you rub the seedhead of timothy hay w/ your finger and dump them on the sticky surface of a pear, and hope your bunny will pick up some as he eats the pear.
By the way, I found that removing pellet w/ just hay diet won't work. he won't eat the hay, and that's the end of it. Try the above and let us know
