If you are following the Plant Paradox diet, then you are eating more healthfully than the vast majority of other people, I can't see how that could be problematic. A couple thoughts for more information:
1. We have a thread and talked a bit about babies and their nutritional needs. "Babies in ketosis"
viewtopic.php?f=3&t=4734&hilit=babies#p54346
2. Also here's a video talk/presentation, "Optimal Weaning" where she comes from an evolutionary perspective, that same perspective that Dr Gundry often follows.
https://www.youtube.com/watch?v=hbksU68KkzI A bit of a warning, I found the volume to be on the low side, so it might help to open the transcript, even though it is auto-generated and has some odd translations. Use the three dots, see the picture, I have where the "open transcript" is circled in red:
amber o hearn transcript.JPG
Lastly, regarding how to raise your son. As a youngster he shouldn't be as damaged as us "old folks" who are trying to repair the damage we've done to ourselves over our previous decades. Thus, I'm thinking he shouldn't have to eat nearly as restricted of a diet as recommended in many of the threads here. There is a study that basically concluded that when ApoE4s maintain insulin sensitivity, it is VERY, VERY good, but when ApoE4s have insulin resistance, it is horrible. So I'd keep sugar minimized in his diet. I know it's tough as a parent, but I'd try to keep sweets to special occasions only, don't restrict it completely and make him feel "weird" around his friends, but do keep it minimized. I'd also stay away from traditional grains/bread, not the alternative versions Dr Gundry approves of. Again, look at it from an evolutionary perspective, our ancestors didn't drink soda, and eat sweet snacks every day, they didn't eat foods that have been grown with glyphosate and with stuff to accelerate growth, that have preservatives added to allow it to "stay fresh" for months on the shelf, etc. Stick with real foods as much as possible, stay away from processed/packaged food. Stay away from industrially processed vegetable oils: Corn oil, Cottonseed Oil, Soybean Oil, Safflower Oil, Peanut Oil, Canola oil, which means staying away from fast food, even eating out very often. If you follow those general guidelines, your son should remain insulin sensitive and his gut should remain relatively healthy that he could probably get away with some lectin consumption, particularly those from vegetables. When he gets older, if he maintains a basically compliant diet, I'm guessing he won't have to go more radical with his diet later on as the rest of us "old" ApoE4 folks are doing now.
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), but was intrigued enough by him to buy and read The Plant Paradox (finished it today!). Now, I am even more interested and plan to implement his recommendations to see how I do. I’ve been on and off Paleo for many years but still am not even close to healthy. HOWEVER, I am breastfeeding a 7mo old and considering his low protein recommendations, I am wondering if it is safe to do right now? I have searched around, but can’t find any info on his plan being safe/recommended for pregnant or lactating women. Wondering if anyone here has any insight. 
