Diabetes Type 2 Support Group
Type 2 Diabetes is a condition in which the body either does not produce enough insulin or does not make efficient use of it. Insulin is a hormone needed to convert food into glucose, a sugar that the body uses for energy. Without enough insulin, glucose can accumulate in the blood, and can cause serious health problems such as heart disease and strokes and organ damage...

Talk to your doctor if this continues.
And yes 54 is low....
Wow .....at that number I would be dead....if mine goes below 100 I start to get shakey, sweaty and VERY tired. Everyone is different, there is no "perfect number" either way.
Exercise drops it down quickly so I have to be careful with that.