You can water every day outside in a smart pot and not overwater, all depends on the quality of your soil. I'm in 60 gallon smart pots and water a few gallons every day. Another week and I'll be putting down 4 gallons a day. The "let your plants dry out" stuff is fine for indoor grows with controlled temps but complete bullshit for outdoor grows with high heat.
The clawed leaf tips is a sign of overfeeding, not necessarily nitrogen. It is most commonly nitrogen because that is commonly the most applied nute in veg. You can produce clawed leaf tips with low nitrogen levels if your overall ppm is still too high.