Do you have any ability to make variable rate? If so, will be happy to help.
Depending on your field variability:
Seeding (no costs cut, but redistribution of kernels between zones  will give you ±10% more yield)
Fertilizer (biggest costs cut). Depending on you productivity zones, soil levels (do you have sampling data?), with custom formulas or just per zone custom rate usually 30% cost cut.
Herbicides (can save up to 80%)
Crop protection usually 30-50% cut

Most of the practical cases are described here: docs.geopard.tech