Hello. About 2 years ago I started trying to grow a baby mango tree from seed. All has been fantastic until recently. While I had it outside for a few days to catch some warm sun, a small silkworm decided to make a house inside the stem of my tree. The nest is where all the growth was occurring. Since then the worm has been removed but the tree won't recover. It has been a few months and all new leaves quickly die before getting big. Please help!

Hi and welcome, could you please post a picture of your baby mango, the whole plant and the silkworm nest in a close-up?

That will help a lot to recommend what to do next.