The Bunny food doesn't have nuts though it does have sesame in it.
https://www.zooplus.co.uk/shop/small...RoCfY4QAvD_BwE
I don't think it's the time to change food though so I would stick with what you have and supplement with some of the ones I suggested. Bunny is expensive.
I make the porridge (or ready brek) up just as I would for a human with water and cook it and I add a teeny bit of sugar as the mums need energy I think.