Gas, gas, and more gas!!

Ok, now we know for sure that Ariella gets terrible gas from dairy products (I let myself slip and had cheesecake, she’s been gassy since). What now? She’s already 5 months. Does that mean she’ll continue getting gassy from milk products or will she grow out of it? Her GI dr wants to try a milk based formula when she’s 6 months. She’s on soy now. Will she be ready for it then? I was really hoping that she’d grow out of it by now but I guess we need to wait longer. Is it possible that she’ll never grow out of it?