Thank you both for your advice and I am def going to try straight pellets to see if they will eat. Like I said they still get their hay and alfalfa cubes. I know they can be stubborn but I will let you know how it goes.
When I got the first one they were feeding him everything and I tried just pellets for a while but he wouldn't eat I have found some of the oxbow and have ordered it so it shouldn't be long before it gets here.
The other two sisters had been fed straight rabbit mix before I got them which I didn't agree with so that's why I was mixing it to kinda ween them off of it , like I said I haven't had the sisters very long at all.
Thanks again!!