Substitute for enfamil AR

Melody • Mom to soon to be three amazing daughters❤️❤️

I live in Texas and before the storm I bought my usual two boxes of enfamil AR ready to feed that my daughter lives. Due to the storm the delivery is postponed and now I feel like it will be delayed further than Tuesday which is the new expected arrival. Luckily we had the powder handy due to the samples our pediatrician gave but she’s not taking it well. I can tell she doesn’t like it. It’s still the first day but I don’t want her to be underfed until what she likes come in. So far she’s only consumed 2.25 ounces per feeding from her normal 4-6 per feeding. Her gastroenterologist had said when she turns 5/6 months we can switch to the regular enfamil. Does anyone know what the basic enfamil is?? There’s so many choices. I’m wondering if she means any enfamil that doesn’t include any other special terms like (nuerpro,gentlease,sensitive ect.) I’m thinking this may be a good time to switch if she’s not taking to powder. Any advice would be helpful! Feedings were stressful before and the last three months were heaven since we had finally got a formula she loved. It’s stressful watching her not eat much again.