These little tweaks helped my lagging chest become my strongest body part...
Chest and Back on the same day:
I like training chest and back on the same day twice a week similar to the Arnold split.In your case, prioritizing chest but keeping the back volume would lend itself to this approach. The chest / back combination makes for a longer workout but it keeps my shoulders supported and happy due to the back movements warming up and engaging the rotator area. It also reminds me to stick my chest out and shoulders back, allowing better pec engagement and form.
Incline Bench > Flat Bench:
When I switched my first heavy chest exercise from flat bench to incline, I really started to see major gains. I was likely letting too much shoulder and tricep "help" into the flat bench, which is common. For incline bench I like 6-8 heavier working sets of 6-10 close to failure, staggered with an easier lat pull down and 1+ minute rest between each. For my next chest exercise (usually a hammer press or flat bench) I will dial back the volume (more like 4 sets) as I will be pretty fatigued, and focused on a heavier back movement like a row. Obviously progressive overload and strength matters a good deal with these first few exercises but starting this way seems to allow me to then do the chest movements that "feel" the best focussing on pump, stretch and engagement, having already pre exhausted and maximized recruitment.
Maximizing Stretch/Depth:
I also feel like my chest really grew after switching from standing cable flys - to (bringing the adjustable bench over for) seated flys. Something about the support makes it so you cant cheat or use shoulders and really maximizes the stretch. On the last set I will hold the stretch for :30 - 1:00. This should be done near the end of your workout because it kills your strength afterwards.
Honorable mention: Cheat meal or higher cal/carb refeed on your chest days within one hour post workout. Pinning IGF into pecs immediately after or before chest training.
Good luck bro!