My lemon haze is looking sad.. need some help

Hey everyone! I’ve been having a bit of a hard time getting this lemon haze through flower! Last week she was doing fine but I started noticing some leaves dying and not looking as healthy. At first I thought I was overwatering her so I dried he out by not watering for a couple of days. I think this is where everything went bad because I went in my tent to see if she was ok but she looked dead.. I was terrified. So I gave her a clean water only watering to flush out at nutrients and re hydrate her. This is 2 days later. Would love some help !