You're likely close to receiving your NARSUM. I have all my claims completed and submitted to the VA with a submitted NMA but I'm still in evidence gathering as they have their own method of reviewing correspondence. I would recommend calling your PEBLO semi frequently to ask about your NARSUM to avoid needless anxiety. There's not much incentive for them not to immediately inform you about when your NARSUM comes in though, they'd have to review everything with you regardless and I'm confident they want your process as progressed as you do.
I learned pretty quick that trying to keep an eye on where things are at internally at the VA is a nightmare and doesn't get you anything worth your time. Your only actionable and worthwhile thing is your review of your NARSUM & NMA with your PEBLO. Just sit tight and get some kind of definitive answer or affirmation that your PEBLO will call you ASAP about it if it comes in. Bide your time wisely and consider looking into your VR&E benefit as well.
*presuming you're active duty going through an ides meb/peb process
