That’s about all you can do. For what you paid, repairing it isn’t really feasible. Probably going to have to buy another or use another phone.
Hey there! I am so sorry that this happened to you -- I've been there. I know it's not really a "supported" or "manufacturer approved" resolution, but human to human I did bring back a phone once in a box of rice, by taking everything apart (battery, back cover, etc) and placing them all in rice individually and waiting a day. That said, I've had another phone completely tank after taking a dip, and had to use my insurance to file a claim to replace the device.
If you've got insurance on your line and this is the last device on record, then you should be able to file a claim and get a replacement by paying the deductible. If not, then as snn555 mentioned, it may just be time for a new phone. I wish we had better news for you! How did things go with the silica packets?
Just wanted to check in and see if you'd found a resolution, either with the tips above or a replacement.
Sorry again about your phone, we know how much of a bummer that is.