Those with CMPA babies who did the milk ladder....

I need to start the milk ladder again but I think step one is the biscuit step and my little one no longer likes malted milk biscuits. Are there any other store bought alternatives I could try, or was anyone given any recipes to use? My HV has never sent any information through, despite asking a few times since he turned 1 🤦‍♀️ and the doctor didn't provide any info either! Finding it hard to get the answers online too, so hoping someone else in this group might have some information they could share pls 😊