No effort grow

Hi @Cookieandcream! The spots are probably nothing to worry about, but make sure it's not pest-related by taking a daily closeup look above and below the leaves, if you notice anything, spray a repelent solution (crushed garlic mixed with neem oil in water works very well). As for the leaf burn, this is nutrient related, your plant is asking for more Potassium as she entered the preflowering stage, give her a good meal made of P+K but stop adding Nitrogen from now on. I see you've managed to get rid of these issues by yourself, congratulations your plants are looking awesome! Hope this will help, let me know in the comments section if you need any further information, and happy growing! 👊