Breastfeeding Twins?

Ra

I was wondering if there are any bf twin mothers out there. I have three girls my first was not a good experience bf she had severe acid reflux and I could not get my supply up. My second I bf for about a month along with formula. My third was very small at birth and had to be nursed then bottle fed every two hours for the first month after that I ebf for a month then back to the bottle. I was taking fenugreek 3 capsules 3times a day and it did help with my supply but I was far from a flowing dairy. I'm now having twins and would really like to bf although I'm scared about there size since I'm going to be delivering at 36wks. Any tips or words of encouragement I almost already feel like I should give up.