First time grower, not yet smoker

Progress is slow, leafs are clearly damaged. This plant is not thriving, but I'm trying my best -_-; There are many variables, non of which I have full control on yet. Light ☀️ I bought a cheap LED from aliexpress, it said 300w, but I have no way to test that, or measure the amount of light. Water 💦 I water when the soil feels dry when I stick my finger in the dirt. I've started correcting the pH towards 6.5, but I didn't the first watering, and my tap water is 7.7. Soon I intend to start giving nutrients in the water. Temperature 🔥 Sadly I had to learn the hard way that my tiny tent quickly gets HOT! Even with the door open and a fan on, it still gets too hot during the day (29.4 celcius)