I started to collect the colostrum at about 20 weeks. I was still breastfeeding my middle son until I was 16 weeks and then it changed back to colostrum. In my twin bible I was reading during the pregnancy, someone recommended collecting the milk and putting it into express bags 10mls at a time. I went to hosptial with over 50 of these bags as as my bubs were in nicu and special care being tube fed, I had enough milk to keep them going until my real milk came in. There was no way in the world I wanted them to have any formula so this was the best thing I did. The midwives were so impressed and I would not have had anywhere near that much if I had to express it for them after they were born.
Good Luck
Dolph
Mum to
DS Bailey 6
DS Jesse 3.5
DD/DS Summer & Taylor 1

Step-Mum to Elodie & Brooke