8 Months:
-2h 30m in the meadow
-1h play
-6 pounds hay
-Water
-Carrot
-Salt Stone
-7h play
-stroking x2
-turnip
-grooming

10 Months: method 1 (this one gives your horse the 1.18 GP gain with more energy and time at the end of this day)
-2h in meadow
-1h play
-9 pounds hay
-carrot
-salt stone
-1h play
-water
-6h play
-stroking x2
-turnip
-grooming

10 moths: method 2 (this one gives your horse that extra .02 to get the full 1.20 while ending at 22:00 and 22% energy!)

-2h in meadow
-1h play
-9 pounds hay
-carrot
-salt stone
-1h play
-water
-6 pounds of hay
-6h play
-stroking x2
-1h play
-turnip
-grooming

12 Months:
-1h 30m in the meadow
-1h play
-8 pounds hay
-water
-carrot
-salt stone
-8h play
-stroking x2
-turnip
-grooming

1 Year 2 Months:
-1h in the meadow
-1h play
-10 pounds hay
-water
-carrot
-salt stone
-9h play
-stroking x2
-turnip
-grooming

1 Year 4 Months:
-30m in the meadow
-1h play
-12 pounds hay
-water
-carrot
-salt stone
-10h play
-stroking x2
-turnip
-grooming

1 Year 6 Months:
-30m in the meadow
-1h play
-17+ pounds hay
-salt stone
-10h play
-water
-carrot
-1h play
-stroking x2
-turnip
-grooming
-1h play

I basically keep this in my head, since I do it so much... lol, I hope it helps!