Tip-In and Cold Start enrichment - Subaru STI

I recently finishing dialing in my MAF sensor scaling and my MAP comp tables for my 2011 Subaru STI but I'm still seeing some large closed loop fuel trims during sharp throttle input and gear changes. See forum post https://www.hpacademy.com/forum/reflashing/show/logging-subaru-sti-fuel-trims-around-the-gr-stumble-zone/#post78119 for details on the MAP comp tuning. I've concluded that this is a result of a poorly optimized tip-in enrichment table and I'm looking for guidance on how to go about tuning this as the reflash course doesn't talk about tip-in enrichment. I've watched a couple webinars where Andre tunes tip-in and cold start on a v11 STI but he's using a standalone ECU and the tables he edits use load percentages, as the main fuel table is a VE-based configuration. My factory Subaru ECU uses injector pulse width (ms) for its tip-in tables. Can anyone provide some insight on how to go about tuning tip-in and cold start and what parameters I need to log and how I should set up my histograms?

Fuel trim errors on tip-in seem to be inherently closed loop so I assume I need to log the total trim percentage. But then the actual tip-in enrichment tables work off of IPW so I'm guessing I'd need to log that as well, plus throttle position since that's the main reference. EcuFlash has an A and a B throttle tip-in enrichment table but Cobb Accesstuner appears to only have one table which they just refer to as tip-in enrichment. Of course, there's a lot of compensation tables which use coolant temp, boost, and RPM, ect.

Cold Start aka Warm Up enrichment seems to have two main tables for open loop and closed loop. In the Cobb Accesstuner software, the description states that the enrichment eq ratio compensation values in these tables are added to the post-start high and low speed tables to determine the primary enrichment. Are the values in these cells AFR numbers? Coolant temperature would obviously be logged for cold start tuning and assume I would need to also log wideband AFR but I'm confused about how to go about getting my closed loop trims closer to 0% shortly after cold start. After cranking and running rich in open loop, the engine goes into closed loop and I see trims of about -10% to about -18% for a few seconds before the trims drop to about -5% and remain at that level for the next few minutes.

See attached screenshots for what tables are present within the tuning software.