When I have an active day I reduce my evening Levemir by 2 units and then adjust it back up the following day or maybe just 1 unit increase the following day and the other one the next. Of course if I have another active day I knock another couple of units off. Once I get down to 0 units on a night and I am still getting hypos then I start to reduce the morning dose a little. My evening basal dose constantly needs adjustment to cope with my variable lifestyle and I can go from 6 units at the start of the week down to zero if I have several consecutive days of hard physical activity and then back up to 4 or 5units within the space of 10 days or a fortnight. It is very rare that I have the same dose of basal insulin on an evening and for me that is the beauty of Levemir in that it allows me to adjust the evening dose according to what I have been up to during the day. Doing the DAFNE course gave me the confidence to adjust my basal doses more freely and find a better balance. Some nights it is a bit of a guessing game but within a reasonably safe range.... So some nights I will struggle to decide between 3 and 4 units and then I have a half unit pen to go for the middle ground. Other times I can't decide between 2 and 2.5. If I go with 2.5 then I have some cheese or peanut butter or meat before bed to help stabilize my levels through the night, but it is probably a better rule of thumb to go with the lower dose if you are unsure. It all comes with experience and confidence. It also helps when your honeymoon period has come to an end and things are a little more predictable. I do wonder if that is why they tend to delay referral onto DAFNE courses until you have 6 months in and perhaps why they are reluctant to give pumps to the newly diagnosed.