We should always cook the egg well to avoid salmonella and also because it is easier to separate the yolk from the white.
You should introduce egg with the yolk and
start with a small portion in the middle of the day and increase the quantity gradually.
In the beginning, do not give more than 2 yolks a week.
If, after two weeks, you do not see any adverse reaction, start to introduce the white, always cooked and mixed in with his purees and no more than twice a week.
Try to give him an omelette.