Do you have animals?
Based on my experiences and discussions with a number of immunologists / functional medical doctors I would avoid all nightshades (tomatoes, potatoes, aubergines) and legumes (peanuts, peas, beans, lentils). Start with other fruits, vegetables, rice. Take things slowly and watch carefully.
There really are different schools of thought on early introduction versus late introduction but bear in mind that much of this 'early introduction' refers to the window between 4 and 6 months.
Our first NHS consultant said that the change in advice about eating peanuts during pregnancy was due to the fact that the advice not to eat peanuts in pregnancy did not result in a decrease in peanut allergies but an increase.
There is much about allergies that is poorly understood and there is currently no way of testing if your child will become allergic to something in the future without exposing them to the allergen, though it can be done by blood test, there is a question over whether this is truly effective if there has been no prior exposure.
I also wonder if one can become tolerant to a potential allergen but that it can have another impact on the immune system, early reflux, dairy allergies which appear to be outgrown and later appearance of eczema / asthma etc.
And while I might know a huge amount about my own child's allergies and the studies I have read/ discussions I have had with professionals, the one thing I do know is that professionals rarely fully agree with each other about every case and no one person has all the answers for every patient.