Introducing allergens

mrssquatch

What are y'all doing to introduce allergens like nuts, dairy, peanut butter, meats, etc? I haven't been able to find much packaged and already pureed for babies and I don't know enough about BLW. I've found turkey and chicken dinners but I'm thinking he really needs to try fish and nut butters. He was also diagnosed with a dairy allergy at 2 weeks old and the doctor recommended we try to slowly start reintroducing. Has anyone done that? What did you do? First time mom here!