Well I think I managed to delete my long rambling post which is rather annoying. Let me see if I can redo it with a more succint and understandable post. My DD4 is managed with humalog and lantus. She is about 1.5 years past diagnosis and bouncing slowly out of her honeymoon and we are a couple months into a celiac diagnosis as well. I am trying to fine tune the nighttime management. We were having scattered severe night time lows for awhile but seem to have resolved on gluten free diet (at least we are getting something out of it). We were seeing a strong pattern where she spikes about 3-3.5 hours after her dinner humalog which is usually about 1-2 hours after she goes to sleep. She would rise steeply and plateau usually over 250 and stay there for several hours then drop around 3am through 6:30 when she would start to rise. I ended up trying to deal with this by giving her a correction dose around 11-12 when she was over 200 and climbing but then sometimes she would go low at 3-4 am. I tried to deal with this by switching the lantus from 9pm to about 6-7 pm thinking maybe we were getting an accentuated drop around 3 due to a lantus peak and maybe I could use that to help with the spike around 11-12. At first it seemed to help a little. I also tried backing off on the lantus a little around then as it seemed like she wasn't needing as much and so the nights were a bit smoother for a couple weeks. Then she got sick and we were on vacation so it was a mess again. Now she seems back to baseline health and so I am trying to adjust. During her illness and after I increased the lantus gradually again. A couple months ago she was up to 3.2 which seemed almost too much and we weaned down to 2.8. Now in the past couple weeks I have crept her up to 3.4 which is the highest she has ever had. On a typical night she eats around 6:30 or 7. She has a small peak if any and occasionally drops low or borderline about 1.5 to 2 hours after humalog then starts to rise sharply after 3 to 3.5 hours. Since I have been increasing the lantus I had held off correcting her highs at night as much lately and we were seeing her go from around 70-100 at bedtime to 250 to 280 for most of the night and then trending down around 5am so that by the time she eats which is often late like 9am, she might be 150-220 or so. If I correct her (lately) around midnight with .5 unit of humalog then she drops to about 65-70 in the morning (5-6am). Sometimes I have to treat her but sometimes she hovers there then starts to rise at 6;30 so that she might be 120 or more by breakfast. A couple months ago the corrections at 11 didn't do much for several hours but lately she seems more sensitive to it again. I have been wanting to do basal testing but wanted to have her healthy etc before doing it so haven't done a real basal test yet. But a couple days ago she had a pretty low carb/low fat dinner of grilled plain chicken and berries (blueberries, strawberries and raspberries) and maybe a bite of cauliflower at 6:30 She had minimal spike and stayed at 115 for a few hours after that until about 6 hours after her humalog and meal when she rose to about 185-200 for 4-5 hours then drifted down to 129 around 8am. So from what I read about basal testing you want to start and end up within about 40 points of each other. She was 115 at about 4 hours after humalog and 129 in am so that seems good but is it typical and expected that she will rise to nearly 200 for so many hours in between the end points even with a dinner like that? I'm just trying to figure out what to adjust next and if she is on the right lantus dose or maybe we need to split lantus dose. When I look at her CGM date she runs much higher between midnight and noon that she does between noon and midnight. She has this slow prolonged high at night then a big breakfast spike then after lunch she has a tiny spike and skips along borderline low in the afternoons and a small spike with dinner until she reaches 11pm or so. I could try increasing the lantus but I would have to back off the humalog doses as she is already often 65 to 75 before her lunch and dinner which I was thinking was due to the lantus since it happens just as the next meal is due. I'm sorry this is still a long and rambling post. I know a pump offers much more options in changing basal rates but I know plenty of people manage well on MDI so if any of the above makes sense to anyone then I would love suggestions on dealing with the prolonged rise at night and how to tweak things.