1-sell ADA 1.40
2-when price 1.39.Create a trailing buy to target price 1.15.
But I need stop loss at 1.40 because I need roll back my ADAS if price change change back.
It sounds like you would benifit from making a reverse grid. From 1.39 as a higher limit to 1.15 as a lower limit. During that time you can continue to move your stop loss down from the higher level to the lower level and if it continue to drop farther then you will be able to continue to acculumate coins.