Bottom leaves drying/shriveling/falling off, not Nitrogen, cant fidn it in diagrams

One of my plants is having problems, she is about 2 weeks in flower, recently her bottom leaves have all been drying up and shriveling. She has plenty of Nutes and isnt showing signs on the top half of the plant of problems. I am not sure what could be the problem after all I know about nutrient deficiencies. It doesn't seem to fit any standard deficiency. Any solutions as to what it could be?

I use dyna gro nutrients maybe once or twice a week

I water her about every 2 days, if I don't she starts to wilt. The top of the plant is perfectly fine as you can see from the picture asides from some curling upwards.

Soil probably dried out too much between waterings. When rootbound that can happen a lot quicker. I've had it happen a bunch of times. When the soil is dried out. The plant pulls everything from the larger leaves to survive and sucks up nutes more than usual. Top dress with some worm castings . That will help with retaining moisture. Plus bennies.

Luckily for me I have some extra soil I can use, this is the one plant that only has about a gallon of soil due to not having enough starting out. I will fill it up some and see how she likes it

Imo time between waterings is roughly about a day per gallon of soil, once a root ball is established. My 2 gals need watering every other day and my 7 gals every 5 - 10 days depending on strain and plant size. If root bound, dying leaves, nitrogen and molybdenum (purple edges on leaves) deficiencies will occur real quick. Nutes will get used up rediculously fast. Especially with super soil.

Depending on the soil you are adding maybe flush it some prior to adding to plant. If theres too much nitrogen. Flowering will lagg.

Actually, it looks like nute lockout to me...do you let it drain out the bottom when watering/feeding? IMO you need to push the old out with the new and make sure ALL the soil is getting wet, as it may cause a toxicity in your soil if you just water/feed enough to not let it drain...I would flush with a mild nute solution..if it was me...good luck man