I really want to breastfeed

So I’m 26 weeks and my nipples are really sore off and on and my breasts are swollen and I don’t have milk coming out yet except for the foggy/clear stuff. I produced breast milk with my daughter when I was pregnant with her and my breasts filled up close to the end of my pregnancy but I still wasn’t able to breast feed her. And I am just wondering if there is any way to help me produce more than enough breast milk for this baby or if I will be able to tell if I will be able to breastfeed or not from any type of pregnancy symptoms? No judging or rude comments please.