So this is not a problem. He is only two so he will grow out of it. Practice Attachment parenting, cosleeping, emotional connection and let him let go of you at his own pace. No more vaccinations, do a vaccination waver for govt. assistance and for entrance into public school, and do whole foods, no white flour, no sugar, lots of healthy homemade foods. Something might have triggered his clingyness and you can talk to him about it. Do you have an update?