@Paige differant brands require water or formula. We personally like formula with ours
We tried a rusk mixed with 1/2-1oz of formula before her second bottle of the day is due usually around 10ish and she enjoys. Could always move to the porridge after. She may not like the texture initally, with the rusk you can have really smooth or with the odd lump to get her use to textures
My HV said to stay away from Rusk as they have way too much sugar! We have started with baby porridge mixed with water x
I thought you had to use water not milk🤦🏽♀️