I am facing very simillar problem now: lack of pressing strenght and explosiveness (on flat/inc barbell, db presses, oh presses, push presses, dips).
My 2 cents of advise: focus on something else you do with lower volume or intensity than pressing.
If i know from my log that my pressing is week, i focus more on pulls: stiff leg deads, rows. These are lifts i can blast despite the pressing weekness. Curls work too. If squats don't work the right way i do leg presses.
I train doing something else and wait for a pressing reload when i can build up the pressing performance again to a new high. I am a beginner and experienced 3 waves of great pressing gains and drops. It is like on the stock market: you do a new high and fall, important is to make a higher high and a higher low.
I've noticed that the greater a pr i make, the deeper the incoming performance drop is going to happen. So if you don't compete or try to peek, the best gains are the steady, planned gains.
If you plan to push your numbers to the next level be sure your sleeping time is of high quality. 7 hours at night going early (till midnight) + one hour nap during day (if possible).