@asktgm welcome to the community!
You may need to dial in your environment (VPD), your light (DLI), and your feeding/watering technique.
If you look up vpdchart dot com. Your humidity vs air temp vs leaf temp.
If you can get a laser temp gun set emissivity to 0.98 to get an accurate reading. If not temp gun… Many guess or assume a degree or 2 or 3, etc… Less than the air temp.
Depending on the stage and week of that stage your plant is in there’s optimal settings for temp and humidity.
I am currently a few weeks in veg. At 83f and 68%rh. Leaf temps about 80-81f. To find the correct range of vpd check the chart.
DLI… Start using DLI
Again set your daily light integral according to your plants stage… Checking chart… Raise the light like you did… Each manufacturer of lights usually has recommended height above canopy listed. Them recheck your DLI to ensure they are getting enough light… Be it… 12, 18, 24,or? Hours per day of light. You will need a par meter or quantum meter to check your ppfd.
The best dli chart is on the link to the thread by @Nicky
Also you want your water/feeding pH at about 6.5 for soil. Water to runoff then let dry… The plant will tell you when it needs water… Also get used to lifting the plant… Dry is much lighter than watered.
That’s a start… Hope it helps…