I would suggest that you need to reduce carbs further if you want to avoid BG spikes, not increase them. But you need to replace the calories from carbs with calories from fat. So, for example, replace toast/cereal for breakfast with eggs/sausages. You won't lose calories but impact on BG will be minimised.
By doing this, you will also reduce the stress on your remaining beta cells. Because they aren't being forced to produce large amounts of insulin they will last longer and so will your honeymoon. Apparently the honeymoon can be extended indefinitely in this way. But it is a limited window of opportunity .......
