I'm facing an issue with a CTI-style mission: as the attacking side expands, its units get spread thin guarding objectives (even with the invasion ai setting) to the point they don't have the manpower to push anymore.

Currently I'm working around it giving the invasion side a very large compliment of infantry to use as reserves then setting it at low readiness, but that result anyway in a first massive attack right to the core of the enemy, which is spread over the whole territory and can't hold its center, getting steamrolled and losing valuable asset and sectors as soon as the mission start.

How are you all dealing with this? I've also tried just setting the BLU_F commander as insurgent, but doesn't really fit the theme which is a straightforward cti; opf are in control of the island and a large nato contigent has landed to liberate the place.