My boy was exactly the same way about tuition centres, so we switched him to online lessons when he was in P5 and honestly it made a huge difference because he could learn from home without the travel stress and the resistance seemed to drop significantly. Online can work really well if your child responds better to a one-on-one format and a more flexible environment, though you'll still need to make sure he's actually engaged and not just passively sitting through it. Since your son's Chinese is already acceptable, I'd say it's worth trying an online option like what you mentioned, especially since you'll save weekend time and he might be more willing to cooperate. Just pick a tutor or platform that matches his learning style and gives you progress updates, so you know if it's actually helping or if you need to adjust again.