Can't shrink windows volume

Went to set up Manjaro on my Windows 10 Laptop for a dual boot. couldn’t create space to install during the installation process so I boot into windows 10 There I try to shrink the partition size but it would only allow me to shrink it 3gb. I went through and deleted everything but important docs, cleaned up files and optimized the disk, with no change from the 3gb it was allowing. Is there something I can do to change that partition size without blowing the whole thing up?