well DS has only ever worn 5-10 nappies a day coz he wasnt NB when i started he has about 20 from the last time i counted plus 2 night nappies so around 4 days worth on average
DD wore flats for about a week just the flanny ones most hospitals use theres about 20 of them she probably gets changed about 10 times a day shes already stopped pooing at night so i use a OSFM All in 2 which gets her through the night just will need nights very soon lol and we are almost running out when we get rain for a couple of days i have about 5 NB covers and a couple of smalls and thats working well for us but shes started out peeing the prefolds so we are moving onto BBH magicalls omg i love them and they will last a while coz they are fitting on the tightest setting and shes 4.3 kgs but for a just NB prefolds and covers work best coz u can get a better fit
HTH