Wow, that's a lot of strawberries! There are still a lot of unanswered questions, many I haven't even gotten to yet with many variables so my suggestions now are sorely limited. And I'll just say from experience that it sounds like your fertilizer regiment is way off. Usually stunted, pale plants could use a nice helping of nitrogen to begin with and that's a whole lot of phosphorous. But it means your strawberries can still make a great comeback!
Since you have a lot invested in your berries I suggest that you step up your game. First, you should contact your local extension office for more info about growing berries in your area and get a soil test. The soil test will give you a boatload of information.
Since I started growing berries I have mostly been following the advice on these 2 websites. It has paid off well for me.
https://strawberryplants.org/g...
https://extension.umn.edu/stra...
Except for the one bit of advice from Strawberryplants.org that gives suggestions for what varieties of berries will grow best in my state, Arizona. They just say that strawberries won't grow well here. Well, I continued to do a lot more research and found 3 varieties that grow really well for me here.... Fort Laramie, Sequoia and Ozark Beauty. They are outstanding. So don't give up without a fight.
My original suggestion stands. With a soil test and help from your extension agents your berries could make a great comeback in a very short amount of time.
Happy gardening.