Plant very droopy

This is my 6 week old plant, LST for 3 weeks, and 6 days of 20/20. I watered her 5 days ago with flowering nutes and she was fine until yesterday she got real sad. Soil had a moister of 4 out of 10. (i normally water again at 2). pH is 7. The temperature is always mid 80s, although today it was 92, im not sure if it was yesterday too or not. I watered her today with pure water. Can anyone help?

first pic is yesterday, 2nd is today

maybe a lil heat stress ? they look fine

normally the leaves are sticking perky up =/

Ph is to hight u need it to be around 5.8-6.5 mp higher no lower. And the temp is pretty hot i keep mine in the mid 70's. You have been giving it flowering nutes at 6 weeks? i think thats jumping the gun a little. Im no expert but thats what it sounds like to me