I have a stupid question. I did a Pliny clone yesterday and when I start adding the hops it says put the first hops in boil for 90 mins, the next hops boil for 60, after that the next bag boils for 45 min, then the next bag boil for 30 mins. Do I start the boil at 90 mintues and count down from there or do I boil the first hops for 90 mins then add the next hops and so on? It just seemed like an extremely long boil time.