Nitrogen affect yield and potency

Thank you everyone for your input

The same yes and no. Also, it’s not easy to read plants sometimes. The signs like lime tips, clawing and dark foliage can be result of other stressing factors, not always nitrogen excess. Also a proper dose of N, but wrong NPK ratio can lead to excess. Reducing N in such case can be a huge mistake. But in general excess of nitrogen can reduce yield. Not must, but can. Take a look at Advanced Nutrients feeding charts for beginners. They suggest extreme dose of N throughout the whole grow, and if signs of burn appear they suggest to reduce dosage. But not correcting all three parts if we talk about ph perfect nutes. Try not to push your plant to the limits. 90% of potential is great, and fairly safe.

The short answer is yes. Long answer is that it may not meaningfully impact it, so long as it's fixed in a decent amount of time. The longer the problem(s) persist the more it can and will impact yield/potency. Weed is also resilient so it will often still produce decent results if you don't outright kill it.