I have one inverted nipple, and to be honest I actually dont know if that contributed to our difficulty with BF, as Aidyn hated attaching, he would scream and scream but I think he was like that no matter which breast he was on.
I gave up BF at one week, then expressed for another 3 weeks, then he went fully onto formula at one month.
I think next time I will be asking for advice and pointers, and maybe trying those nipple shields to see if they help.