Please help i really need it?

ok so heres wat is happaning i got into a gifted program but now it really hard and i cant keep upw everything and my mom says in could quit the gifted program but i dnt wanna leave my friends and im getting an f in science cuz i couldnt keep up w the work pleeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee… help i dnt know wat to do and my mom gets mad wen i get abd grades and i feel horible im always scared im gonna fail