Came across this query by serendipity, so posting this note just in case others encounter the same problem.
I’ve been monitoring our works in Google Scholar for the past year or so, and one of the issues which has arisen is that once Google Scholar has indexed something, it doesn’t revisit/reindex that item for another 6-9 months. No matter what you do, this rule remains cardinal. This is documented at: Google Scholar Help. And my observations over the past year confirm that this is indeed how Scholar behaves in practice.