Is there anything that can be done to reduce or prevent the occurrence of symptoms of diabetes-related small intestine bacterial overproduction?

Probiotics. Bacterial overgrowth usually results from an imbalance between "good" and "bad" gut bacterial. While antibiotics target the bad kind, they often kill the good as well. I recommend a daily probiotic supplementation (l.Acidophilus, b.Bifidum, etc); usually found at the health food store.
Antibiotics. Antibiotic courses may be considered in certain circumstances.