Hi TraderNin, I started spending some serious time on EA Labs in Feb, basically to automate the H12 model in trading manually. It took me 1-2 months to get anything in testing with a decent equity curve. But the more I persisted the quicker I got. So 2-3 months to do the 1st EA and then I developed the next 5 models (with help from Tradeview) in the same amount of time.
Even so, I am still in demo testing, and I am grateful now that I did not skip the demo test phase, since I have discovered several differences in the way the EA's perfome in tester mode and demo mode (let alone live mode) - requiring me to amend some of the EA's so they perform as expected. I encourage you not to miss this step - at least a month in demo testing is well worth it.