I'm leaving ds4 with my Mum for 2 days while dh and I go away. Now, I'm fairly sure I have enough EBM in the freezer but have bought a tin of formula just in case she runs out. Ideally, I don't want him to have the formula at all and my Mum won't give it to him unless she has to, but would it be risky not to do a test run beforehand? My eldest two were slightly intolerant to dairy, but didn't have a severe reaction, they just did better on goats milk than cows. ( And the formula I bought is goats!)
What would you do?