Hi nanuaru,
First of all your statement of being "Guilty Father" in your sig. is quite depressing and demoralizing. You didn't commit any crime to conceive a Thal. child whether you're a doctor or not. Besides Herbal medicine is beyond the scope of genes and mutations etc. so you shouldn't keep putting that line in every message.
Now getting back to the subject.
The key word is "moderation" As in any case moderation is the best path of getting everything right. So you can give everything to your child whether it's meat or fruit and veggies as long as you keep the amount in moderation.
The amount of Iron you get from blood transfusion is far more compared to what you get from food. So if you are compliant to the chelataion then the iron from food becomes neglegible as long as you keep the amount moderate. You can give a little bit of everything as you can't deprive your baby of the other nutrients just because it has a little bit of iron in it.