u/FabulousPurchase6547

First time tomato gardener here:

Can someone tell me what’s going on with my early girl tomato plant? It started out with darker green (flimsy) leaves and over the past 2 weeks it has started turning yellow and brittle. I haven’t put any fertilizer or pest repellent as I’m not sure what to buy or how often it needs. I was watering it daily at the start but then it got cold so I water deeply every 3 days now.

I’m in zone 7a in Nashville, I appreciate any advice!