How can I reduce PDF size in MB before my upload deadline tonight?

My 40-page scanned contract is over the 10 MB portal limit and I have to upload it tonight. I already tried compressing it once but it’s still too big - how can I shrink this PDF?

Honestly, scanned contracts are usually huge because they scan in full color. Try running it through iLovePDF on strong compression, or convert it to black and white first. That always shaves off alot of MB for my client contracts.