Oops, in the post I linked to above for you, I realize now that I forgot to mention WHEN to test...
1) Upon awakening, referred to as fasting blood gluocose, FBG
2) Before sitting down to eat breakfast, lunch, or dinner or snack, pre-B, pre-L, pre-D, pre-S
3) 2-hours or 1- and 2-hour post meals/snacks, 1-hr post-[B, L, D, S], 2-hour post-[B, L, D, S]
4) Before retiring for the evening, Bed
I note this information on notecards now, one per day, but there's lots of different ways to do this - (through trial and error you'll find what works best for you)...
Here's what my Tuesday looked like - (numbers are in mg/dl, not mmol/L, sorry):
112 ..... 9:25 am ..... FBG
106 ..... 10:00 am ..... pre-B
122 ..... 10:59 am .....1-hr post-B
115 ..... 1:19 pm ..... 2-hr 20 min post-B
98 ..... 1:40 pm ..... late, immediately following L
142 ..... 2:41 pm ..... 1-hr+ post-L
127 ..... 3:43 pm ..... 2-hr+ post-L
98 ..... 5:44 pm ..... pre-D
135 ..... 7:05 pm ..... 1-hr post-D
154 ..... 8:07 pm ..... 2-hr post-D
136 ..... 9:09 pm ..... 3-hr post-D
106 ..... 12 am ..... Bed
Some days I'm so busy, I may only test two times, other times, particularly if my glucose levels have creeped up over a couple of weeks, I'll test a lot. Also, I get a 140 mg/dL (7.8 mmol/L) or higher reading, I'll test more until I'm confident that gluocose level is down again.
I also suggest noting what you ate during each meal or snack so you can track how different foods and combination affect your blood glucose levels.