To record blood sugar, meals, and exercise, you can:
Keep a journal to track what you eat and how much activity you get each day1.
Use a printable tracker to log meals and carbs per meal2.
Add notes about medications, mood, exercise, and meals for each glucose entry3.
Download a free printable journal to track food intake, physical activity, and blood glucose targets4.
Choose from various log sheets and charts to record blood sugar levels, insulin, carbohydrate, and physical activity5.

Hope your doing better now!

Drink lots of water . But really just gotta wait it out till the cortizone is out of your system.
How high is your BS. Have you let the dr know. You may need to increase your meds

Along with BS number write what you ate and if you exercised and maybe if you did not sleep well or any other big stressors
There are apps that help organize your data

I do write my sugar down. If that is what your meaning about Journaling.