So my daughter is 7.5 months old, she is a preemie. Anyways last month we switched to sippy cups after the first time using them because she got the hang of it right away and didn’t want bottles. So she been a co sleeper for 7 months as well, last night we decided it’s time to put her in her crib. Well she only woke up once and went right back to sleep, no problems and very happy when she woke up.. I’m so proud of her. I thought it would be a fight to get her to sleep in her crib. Anyways I just had to brag for a moment.. have a wonderful day