Newborn sleepsuits

How many is enough? I thought I’d brought plenty but now I’m scared I haven’t! My cousin has just had her baby and said she changes her little girl 2/3 times a day because of poo explosions🙈. I was a bit naive to think our baby would wear one outfit a day lol. I’d say I have about 16/17 newborn sleepsuits, do I need to purchase more?