The rules don't discourage discussion. They discourage highly detailed planning. The idea is that you discuss priorities, make a rough plan and then go. I don't know if jotl also has the battle goals and retirement goals but these together with the "don't say the initiative number you're playing" rule, the distinct player decks, and the unknown monster initiatives supress quarterbacking and analysis paralysis.
But yeah. GH is a beast to learn. I think we played half a dozen session before we had the rules more or less down. JotL is supposedly easier in that regard but you shouldn't feel bad if it still takes you a while.
Off course, fellow human!