I’m going to come right out and say this: Your FTP isn’t 202 Watts!
Regulars on here will think I sound like a broken record, but if you can’t hold your FTP for at least 30 minutes, then it’s not your FTP, it was just the result of your ramp test - simple as that.
You’ve struggled to hold 202 x 0.88 = 178 Watts for 10 minutes, so I’d respectfully suggest that even that number that is actually a little above your true FTP.
There’s quite a detailed discussion about sweetspot interval length here: