When do you start to prepare for baby’s arrival?

Hi Mummies, I’m a FTM currently at 27 weeks + and looking for suggestions on when do you start to prepare for baby’s arrival? Such as washing of baby’s clothes, prepping baby cot, sorting out clothes (e.g 3-6, 6-9, 9-12 months etc) so that it is easier to take out when baby outgrow the clothes and move on to the next size. Other than that, when is it an ideal time to buy and standby a pack of NB diapers coz i read that baby may outgrew the NB size in no time depending on baby’s weight. At which week do you start to pack your hospital bag? & what do you pack for yourself and baby? Do i need to bring my breast pump during delivery? Will the nurse/LC able to guide me on the usage of breast pump at the ward? If it may help, I’ll be delivering at KKH.