How long between your evening meal bolus and your bedtime test,
@Kaylz? As you know, I don't use any basal these days, but a year or so ago I was still getting pretty bad hypos up to 7 hours after my evening meal. I worked out that it could only be my evening meal bolus insulin that was still beavering away, lowering my levels long after bedtime. The problem seemed to lie in my choice of injection site, which was normally my behind. I surmised that it was absorbing more slowly from that site, so switched to my abdomen, which is normally much quicker - this meant that my bedtime reading (5 hours after injection) was more reliable, since my insulin had more than likely expired. Sure enough, the night hypos stopped!
🙂 So, worth doing a bit of experimentation
🙂