Parents can give advice by all means but as long as the child is not doing a subject that goes against islam or will be bad for them then the parents shouldnt force them into a subject they dont like if a parent is going to force their child into a career thats going to make them miserable for the west of the life then they arnt very good parents my parents always tell me do what you enjoy as long as its halal and theirs a viable career at the end i can understand if the child wants to do a subject that wont get them a decent job like football studies ect but if the child wants to do law or accountancy but the parents want them to become a doctor so they can boast to the rest of the family (as often is the case) ect the parents shouldnt force them because at the end of it the child wont enjoy their job they wont work properly so they will get sacked or if they are in college or uni they wont want to work and they will get bad grades they wont find a job and they will basically be a waste living off benefits because they have failed their exams