Welcome! Every little one is different and just watch, monitor and treat symptoms as they present. The lactose intolerance can be minimized by either adding the tasteless enzyme lactaid to the milk or buy lactaid milk where the milk sugar, lactose, is already broken down.

With regards to the question on fructose, let me review the American guidelines with you.Fructose is a sugar found in fruits, juices, honey, high fructose corn syrup (HFCS) -if you read labels it is found in many prepackaged meals.

Foods not recommended or to be consumed in limited amounts: Flavored milk/lactaid, tomato paste/sweet and sour sauce or barbeque sauce, breading made from white flour, limit to 1 serv/meal (1 sl. wheat bread, several wheat crackers, 1 cup cooked pasta or cereal), As tolerance increases you can try limiting fruit juice to 1/2 cup or 1 piece fresh fruit as tolerated, Highest fructose -limit further = dried fruit, pear or pear juice, and with beverages stay away from corn syrup, sorbitol, high fructose corn syrup based beverages, coconut milk or cream.

Foods to encourage would be oatmeal, walnuts, rye bread,cottage cheese, meats, poultry, fish and eggs without all the sauces and seasonings. There is also buckwheat, rye, rice, cornmeal, barley, gluten free products, artichokes, beets, squash, potatoes, spinach, and we already discussed fruits.

I hope I have given you the guidance you were seeking. If not, feel free to write back to us. Good Luck! Kathryn Shattler, MS,RDN

All babies are individual. You watch him as he grows and test him periodically to see if he reacts while working with your food allergist.Babies often grow out of many of their food allergies.
I noticed you said you would give him a bite of items that contain sugar, milk, fruit. All of these combined, one at a time? When you begin to introduce his foods, keep a food journal and start with the simplest molecule, glucose.
Sucrose is made up of glucose and fructose
lactose is glucose and galactose the first to try along with possibly lactaid
fructose is glucose, sucrose and the last to try. Of course, all of this should be verified by your treating physician and dietitian.

Lactaid would only be tried after doctor's approval and slowly. Lactaid breaks the lactose down into glucose and galactose. Therefore you are still only introducing glucose into his system first.

Now, since raising children with allergies is very difficult and requires label reading and very strict diets until such time they can, hopefully, grow out of this, I highly suggest you find a well-trained Dietitian in your area who specializes in food allergies to work with you, your doctor and your baby so your baby gets all the nutrients needed to grow properly without getting allergenic food that may possibly damage his intestines, create developmental delay or other issues.

The baby should be on a hypoallergenic pediatric multivitamin that is sugar free.

Back to your question, I am sorry that i cannot give you a specific timeline.
We know that boys tend to outgrow their food allergies more than girls. The average age they outgrew their allergies was 5.4 years of age.

My best wishes to you. Kathryn Shattler, MS,RDN