HELP! Leaves yellowing and browning - Help!!

[Kellykloud]

Hello all, I am planting outdoors and have noticed this yellowing happening to some top leaves, does anyone know what this could be from ? I stopped feeding them nitrogen and then this started, so I am slowly adding it back in.

 

[Dude]

https://www.growweedeasy.com/why-cannabis-leaves-yellow

Take a look there if you haven't already Kelly, lots of helpful information. If it's happening to the top you know it's a new growth. Any chance your pH got a bit high? If you haven't already, I would take a pH on your runoff.