Royal Oak Winding Question

[Sporkmaker]

Hi everyone, I'm hoping to get some advice on my first AP, a 15400. I've had the watch for a few weeks now and although I wear it daily, it has stopped running on two occasions already. The manual states that when manually winding it the crown should be turned "At least 30 times" and the selfwinding movement should take it from there. I had wound it with exactly 30 full turns of the crown and then worn it normally except when I was at work so each day the watch sits still from eight to twelve hours before I get home and put it on again. This routine has always worked fine when my daily wearer was a Rolex but not with the AP.

Most recently I returned home from work, put the watch on (still running, time correct) and wore it for a couple hours, then after falling asleep on the couch I found that it had stopped when I woke up. Kind of frustrating. Is it possible that I need to give the crown more revolutions when manually winding to get the full power reserve or did I just end up with a lemon?