Abducted daughter's mango unwell

My daughter and I successfully grew a mango plant from a seed. Neither of us had any experience so we're surprised when it grew. Now the situation is:

Some leaves turn brown Some leaves go crispy Some new growth dies off Some new growth succeeds

The plant is obviously strong enough to produce new growth, but then some of the ~1cm new growth dries up and dies.

I have not seen my daughter for nearly 2 years following her abduction by her mother, so I am rather attached to this plant and would like to solve the problems and keep it going.

Any help would be gratefully received.

My daughter and I successfully grew a mango plant from a seed. Neither of us had any experience so we're surprised when it grew. Now the situation is:

Some leaves turn brown Some leaves go crispy Some new growth dies off Some new growth succeeds

The plant is obviously strong enough to produce new growth, but then some of the ~1cm new growth dries up and dies.

I have not seen my daughter for nearly 2 years following her abduction by her mother, so I am rather attached to this plant and would like to solve the problems and keep it going.

Any help would be gratefully received.