CAH, that sounds like plenty of food to me. I hope you can get some more answers tomorrow. As if you would know if there is a problem with your machine! You test, the number pops up so you assume it's working and note down the number. The ladies you spoke to obviously didn't know what to do with you by the sound of it. I would be asking tomorrow if there has been a mistake with your test results.
Three cups of rice? I'm so jealous I can't eat half a cup without my numbers going over!