“What formulas to avoid for a 2-month-old baby?”

It depends on what your baby is tolerating. For example is your baby constipated with a particular formula? How can you determine this, are they drinking well, perhaps 4-5 ounces and have not moved bowel in 3 to 4 days and are constantly irritable? That’s an indication that they may be constipated and you could try another formula. Goat milk formulas are gaining popularity now, however you need to read the manufacturer guide as their dilution instruction is different from the cow milk formula.