We got this starter set for our first born and it’s everything we needed. If you’re solely bottle feeding and don’t want to be constantly washing bottles, you might want a couple more. https://www.johnlewis.com/mam-easy-start-anti-colic-bottle-feeding-starter-set/blue/p111364848
4 if you’re planning to breast feed to have as back up incase that doesn’t workout or you combi feed & 8 if fully bottle feeding Remember to get size 0 teats
About 3/4, we had 10 with our first little boy and it was so excessive😂😂 also just go straight for the bigger bottles because the smaller ones only get used for a couple of weeks