Have you tried wholemeal granary? The whole grains slow down digestion, as can what you put on the bread. Spread, meat, salad... all go through with the bread and our gut has to move at the speed of the slowest foodstuff to be digested.
We discussed testing at my X-Pert session last night. Our long term average, measured by HbA1c is the key reading, not instantaneous BG. A T1 can do something about a high reading, but we cannot and, psychologically, that can be a bad thing. There are many variables that can affect our BG at any given time. If you ate the same food several times, the readings after 2 hours would vary widely.
According to the DSN teaching the course, only T2's taking a sulfonylurea or DPP-4 inhibitor need to be testing, to avoid hypos. That is why meters and strips are not made available to up diet & lifestyle T2's
Think about what you were eating before diagnosis and compare that with what you are eating now. What was your HbA1c? It cannot have been particularly high if you are not already on Metformin. When you get your 3 month blood test, the doctors are looking for your 1c to be below target, or at least heading that way, approaching a healthy weight is also good.
Most of us over-react on diagnosis and severely restrict what we eat. Can we really keep that up for the rest of our lives? 3 months is not a long time in diabetes terms.
For the record, I concentrated on weight loss and low Sat. Fat (to lower my Cholesterol) and saw a fall in HbA1c from 46 mmol/mol to 40 in the first three months.
If it is available in your area, I would definitely recommend doing the X-Pert diabetes programme.