Breastfeeding help

Okay I'm not breastfeeding yet but with my first baby I had absolutely nothing to offer her until about day 5. I tried everything the lactation lady at the hospital suggested. I pumped for days and not even a drop. I had only made it to 36W 5D. Looks like I'll be delivering early this time too. Anything I can do to make sure I have milk for baby? I'm 34 weeks.