is it wrong?

hi parents, i observed that my baby has been trying to sit up up (shows signs like chin and arms reaching forward) when he’s resting on a pillow. so i helped my LO to try and let him balance and sit on his own. surprisingly, he was able to balance for a while and i didnt try to let him sit for too long. i also took a video to show to my in-laws and was kind of reprimanded not to let him sit and wait till LO is ready. am i hurting my LO for making him sit..?