When do I move on from NB diapers?

hopeby2015

So my lo weighs about 9 pounds now and the NB CDs still fit her but they are noticeably tighter on her. When did you move up a size - at what age/weight?

Thank you!

ETA: I'm going to use the OS ones

shan417

Whenever they fit without gaps at the legs. It a different for all brands and babies. DS was a couple weeks old, but he was a big baby. Most brands say 10 lbs but newborns tend to have skinny legs that leave gaps, even when they fit the weight recs.

ForeverEverAfter

Depending on the brand, 9 days to 2 months. FB elite OS fit at 9 days/7.5lbs when the cord came off. RaRz OS fit by 5 weeks, bum genius and happy heiny were closer to 2 months/10 lbs. Tots bots was 12 weeks. And the cheapies (rebranded alvas) took til 3 months because my LO had skinny legs.

o_so_in_love

When they start leaking. Or when the covers start leaving marks.

Chichigo

My son fit in newborn covers for at least three months.

skbaum01

We moved up when he started leaking all the time. I think it was at about 2 months.

myblueelephant

It really does depend on the brand and your little one but on average around 10-12 lbs. or 2-3 months.