It takes me ages as well, my attempt can last from 30 mins to an hour. Pretty weird that you would swallow 6 times in a row. If you truely couldn't be any more relaxed then you have either fallen asleep or got some serious HH, I fall asleep usually if I am too relaxed, but I know what you mean, transitioning when in SP is very hard. You attempted for way too long IMO, are you sure you didnt drift off without realising?
If you want to become more relaxed listen to this.