39days flowering need SERIOUS opinions.

im 39days flowering in a pot with soil that has no perlite in it. i developed fungus gnats but not severely, so i let my pot dryout (6days) until the top was crispy and used peroxide diluted in a gallon of water and drenched my soil till there was decent runoff. problem is my pot doesn't really dry completely out cause i still feel weight at the bottom,

even after 6 days of no watering my pot still felt fairly heavy. 13days into flowering i cut a popcorn bud off and she has been yellowing leaves and dropping them but not RAPID like shes gonna die.

i thought it was N def so i gave her some 20-20-20 but it didn't stop and i think i burned her.

i flushed on tuesday with distilled water even though the pot wasnt dried out and shes had the claw for about 13days now and my pot is heavy as hell with the excess water. 2days ago i saw gnat larvae under the pot when i lifted, so i put a good amount of sand under and around the pot and about 3/4 inch on the top of the soil.

i now have perlite and was wondering if i should transplant her in a new pot with perlite mixed in the soil. i can say development of the buds has been good even with the claw.

any feedback would be highly appreciated.

would it be okay to transfer to a new pot?

maybe you dont have enough light. Also sounds like you didnt veg long enough after transplanting into final pot, cause it sounds like the roots dont go to the bottom. I dont see the point of transplanting at this point, u got 2 or 3 weeks left right?

If you are flowering, than why would you give it nitrogen? Yellowing leaves is a good thing in flower. You should post a video and explain step by step what your doing. To be honest, something isnt adding up. 99% of the time its the grower and not the plant. Less is more buddy.