GreenSanta, thank you for the response. I don't know if you exactly understand what I'm asking. Let me try to put things a little more cut and dry.
One plant was grown in a 3 gallon pot. Fed occasional teas when needed. Top once, short veg time. My own recycled soil blend that has been re amended multiple times over the past. End yield 1 ounce.
Next round I grew a cut from the previous plant but this time I increased the pot size to 10 gallons. Again fed occasional teas. Topped more and gave longer veg due to adding a SCROG screen and being in a larger pot. I also switch from my recycled soil blend to a blend from build a soil. Which the plants acted like they enjoyed because they were much healthier and I didn't have to feed as often. End yield estimate is 2 to 2 1/4 ounces.
All other factors, including amount watered, light used, room temps and humidity, all were the same. Changing factors were amount fed, soil mix, pot size, additional topping and veg, as well as the addition of the scrog screen.
I've grown for a while, hundreds of plants, many different techniques. I was also taught similar with the bigger, roots bigger fruits, methods.
I'm not questioning my skills or ability. My knowledge is pretty on point as well. I'm just really stumped that I made 3 separate upgrades that will definitely increase yield but only doubling the yield seems low.