Hi buddy, once the pests have tasted the weed, it is difficult to make them disappear. For now your plants have been stung by flies and bedbugs and gnawed in the center of the leaves by grasshoppers. No bite on the edge of the leaves, so we exclude the caterpillars. If you check my diaries (especially the tenth week) you will see my net tent. I think it's the cheapest and fastest way to protect them from flying creatures. Also mosquito net or wedding net is a good option. Of course neem in profusion as prevention.