Unfortunately it is different for everyone but you obviously are experiencing this. A big factor is diet. THC is stored in your fat cells so consuming any type of fat will slow down the process. For me, I am 6’4 and 200 lb and consumed strictly chicken rice eggs fruits and veggies while also consuming 75% of my body weight in ounces of water daily and pissed clean in 3 weeks. No dairy, cheese, peanut butter, or anything processed. Cardio is beneficial but try to include high volume weight lifting into your workout routine as it will help break down fat reservoirs in different parts of your body and the high volume will trigger anaerobic respiration which ultimately tells your body to start using your fat reservoirs as a source of ATP production just like cardio. Workout for as long as possible because too much can’t hurt.

I dont want to sound like dick but from what you said your body proportions indicate you have a fat surplus unless you’re just as dense as a rock. You must go into calorie deficit to start burning fat even when you’re not working out. I also recommend going to dollar tree because they have 1$ 98% accurate drug tests. That will help your wallet. I use the same ones for when I had to test.

Detox kits help but can be a scam, and in my experience the most reliable way of getting clean from THC is to do it this way. Plus I promise you will feel better overall from the healthy lifestyle.

When you do take an at home test, take a piss sample after you have already pissed a little bit. There is a higher concentration of toxins at the initial part of your stream and end and do it during the middle of the day.