stress and longer flowering periods

im on day 65 of flowering. im running a few clones of blueberry kush. I hit a road bumb with n toxicity a 4 weeks ago. Some was worst then others... but i got it tuned in. The thing is some look way further alone then others... does stress affect the flowering times? By the looks of it im looking to finish by day 80 which is alot longer then the first run i did.

Yes stress stunts plant growth and in your situation that means flowering so I'm not exactly sure what you did but it sounds like you fixed it and it probably resulted in late finishing