DD just started wetting through diapers at night, but she does fine in this size all day long. She is not a heavy wetter, in general. Since I still have 2 cases to use up, do you recommend overnight diapers or is just going one size up at night sufficient?

Re: Overnight diapers or go one size up?
I always liked the overnight diapers.
Edit: when the overnight diapers weren't enough anymore - I put liners in them.
For DS, we do both - overnight diapers in a size up
For DD, so far we've been good with just her regular size, but I would just go up a size first before before buying overnights
I would go up a size first then try the overnights as a second option. Bennett is in 3's during the day and 4's at night. So far no issues.
Btw for those that aren't brand loyal we use Walgreen diapers all the time. They just ran a sale BOGO free