A TDD of 50units sounds a lot, however I do agree that a TDD of 3 is tiny, I am on a TDD of 26units. Are you sure that you are a type 1? Maybe a pre-diabetic or a type2 or even a LADA. It sounds like you are taking a basal insulin, although i don't understand why its split which does suggest it’s actually a bolus, although that is a weird way to use bolus since it’s usually taken with a meal. Give us a clue
TDD = total daily dose
Basal = long acting insulin, i.e. Lantus or Levemir
Bolus = short acting insulin, i.e. Novorapid or Humalog
