Childcare student finance Universal credit

I am due to start a PGCE primary course in September. I have 2 children one school age and another who will be one when i start training. I receive universal credit but am not sure how to fill out my student finance form. It says that i cannot receive the childcare grant if i receive the childcare element of UC which i currently do. Would i not be entitled to 85% childcare as a student is this only for working parents? Therefore would i have to cancel my childcare element of UC to be entitled to help with childcare. Sorry i am so confused