Thinking to delete and restart asin

Hi everyone! I have been selling on Amazon for a year but struggling and have been selling different products on and off due to which some of my products have suffered. I started amazon with two products and after an year I have decided to come back to those two products( i tried to make them work when I was new nut could not so moved on to other products). At this point reviving them is a huge task and I have wasted money in that:

Revive through external traffic(google ads)

Delete and restart asin and lose everything on it

Any help would be appreciated. The two products are shampoo and hair mask so it’s a very expensive category