Marriott Facebook Website:
"Lifetime status is a combination of years at level, total nights and total spend. If you can be a bit patient - we're conducting analysis right now to confirm whether our criteria is appropriately set. The goal is to be absolutely explicit about how one achieves Lifetime status and we'll communicate it during the renewal timeframe (your membership is valid until the end of February). Thanks for your interest!"

If you are 30 nights away, won't you reach soon?