I'm not familiar with Infantcare, just a little pointers here:
- try speaking to the infantcare person-in-charge to understand how they can accommodate your situation. I'm sure they know the importance of new food allergy test.
- You can explore bringing frozen puree cubes of new food to infantcare. Keep it in cooler / ice bag or infantcare's fridge. At feeding time, caregiver can thaw cube easily in a cup of warm water, then feed with cereal. This is similar to arrangement for babies fed on Mummy's expressed breastmilk.
- New food should be introduced in the day. In case of any adverse reaction, there's ample time to observe and seek medical attention.
My home-visit nurse also said 11am-1pm is the time when baby's digestive system is most active. That's why usually start baby with lunch. Then lunch & dinner. And then breakfast.