Karen and Denise - it really shouldn’t be about guessing. Testing basal rates isn’t hat hard to do youself, it just involves fasting. You start out with a good finger stick test - before a meal and at least 2-3 hours after your last bolus. Then you SKIP the meal and continue to check your blood sugar every hour and record, until your next meal time. If your bg stays +/- about 30 mg/dl then your basal is fine.
my adjustment, btw, is only about +/-0.2 units per hour! so make small changes, especially if you don’t have a big basal rate to begin with! here’s a chart!
excerpt from "Pumping Insulin" 4th edition by John Walsh and Ruth Roberts