Auto flower Grow (FIRST GROW!)

Day 17 in soil. Day time temps about 76 and night time about 67 with humidity between 50-55%. It’s seen some good growth but I’m starting to worry it’s getting wind burn. I have an exhaust but it doesn’t create any breeze, so I added a small Honeywell fan. Set it to low and pointed it upward toward the wall. It’s possible it was still getting too much air flow. If you look at the last 9 pictures, you can see the leaves look a little crooked. From what I’m reading, it sounds like wind burn, because I’m for sure not overwatering. I haven’t watered for just under a week and didn’t until today with a light feeding. I added 1/2 tsp of big bloom and 1/2 tsp of grow big diluted in 1 gallon of water. Gave each plant 600ml. Lights have been moved down to 18”. My main goal is trying to figure out a way to get a light breeze on the plants with my fan using cardboard to angle it different ways. I’m using a indoor camera to monitor how much the plants are moving around. Will update in a day or two on progress after feeding and if the plants get ant worse.