How did you learn the added stunts after doing the beginner pattern? Guess I should just try the stunts in order instead of giving some of them a try after flying the beginning pattern...
One way is to add enough fuel for some PRE-planned stunts you want to fly after the pattern, so it cuts off 7 or 10 laps after your pre-planned addons are completed.
However when I went up to the full pattern, I just dry-flew it at home a bunch of times. At the field, I would put enough fuel in it for a full pattern, and possibly, during flight, leave out any stunts that worried me. Sometmes those would be the outside squares or hourglass.
In my opinion, your next mission is to get your engine runs, lap times, and fuel load set right and repeatable every time. Until that is accomplished, don't fly full patterns. For fueling, you can never be sure there isn't some left in the tank. So always fill it to overflow, and pull out a certain amount until you find it. Then use that method for every flight from now on.
But remember, the first flight on a different day will be somewhat unpredictable. If colder, expect it to run dry sooner, and visa versa. It's the same at different locations too. Altitude and barometric pressure especially affect it. You need at least one practice flight before a contest for that reason. I like to have about 7 laps after the clover. My LA46 was so dependable, I was flying only 2 laps after, but looking back, that was kinda dumb.