I bought my first sleepbag 0-6 months. I wanted to use these and nothing else as advised for night, but now I have one it looks massive for a newborn? Any advice? Do u get smaller sizes? I take it a blanket is OK for the day when your watching them.in a Moses basket? And a sleepbag for night in a snuzpod? Also when are blankets and pillows advised? I'm hoping to put lo on the cotbed in her nursery at 6 months.