Buns wont eat A+P

I've just bought a bag of A+P & have been trying since last saturday to get all my buns changed over to it. There currently on SS & i've been mixing both foods slowly giving them less SS but there still not eating A+P pellets just picking out the SS & acting like im starving them.
Any suggestions of how to get them to start eating it or am i at a lost cause & have to stick to the SS.

Thanks in advance :wave:

give them plenty of hay. feed them only 1 teaspoon amount of a& p each and a tsp of ss .....Leave it in the run if they don't eat it and remove when you feed some veggies as usual at night. As long as they have hay they wont starve and by providing them with hardly any alternative in the mornings they may decide that it's not that bad. Keep going like that for up to a week. If they don't start to eat the a& p after that long then you might have to give up.