After nearly 4 years of pumping we decided to switch Riley to the MiniMed 530G with the CGM and she started on Tuesday evening. I still (and always have) test her blood during the night and have caught some lows in the 40's that she has been sleeping through and am terrified about her going off to college in a year and a half, so I figured it was time for a CGMS. The first night her BS during the night was in the 200's and her sensor said 85 so I corrected and turned the sensor off so it wouldn't alarm and wake her up. Yesterday at school, the sensor said she was in the 50's but she was really in the 80's and later when she was in the 80's it said she was in the 50's. She has calibrated several times. Last night when I tested her, I was happy to see that the sensor said 111 and her meter said 125. But this morning, her BS was was 183 and the sensor said 225 with two arrows going up. Riley, being 16, is getting very frustrated and "hates it". Are we doing something wrong? Or is there some learning curve that we need to figure out? Any advice would be so appreciated! We are getting frustrated and discouraged. This feels like so much work to Riley, who is dealing with SAT's, AP's and college tours. She is feeling overwhelmed. I do want her to pay more attention to her sugars, which the sensor is forcing her to do, but the mixed messages are driving us all crazy!