I am on 30g carbs a day. I still eat half a Lidl roll as toast (4g carbs), and I still eat half a dozen home made chips sometimes, and I still eat 2 or 3 new potatoes, and I still eat a chip shop battered fish once a week. All within my 30g allowance. And all without spiking (or medication). It's called portion control. I don't believe in deprivation.