Not sure how much help I can offer except to share our experience. Emma was an adult rescue with MAJOR food related issues (would try to jump up on the counter during meal prep, cry during meals, etc). I crated her or put her outside before and during meals for a good 3-4 months. Now she will lay under the table calmly and quietly for meals - as long as I can keep the toddler from sneaking her food when no one is looking!
Does he generally have noticeable anxiety issues? Many others on here know more than I, but generally in my experience eating issues are health, activity or anxiety related.
Good luck and congrats on your new family member!
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