You can only list so many. If that’s of importance to you than use it. You have to decide.
Your bigger issue of you can list ten and you are saying all are quantifiable to a point that they don’t become believable - especially if you spent so much time helping at home.
There’s only so many hours in a day.
Just make sure your list is truthful and not over embellished and if you’re the student from yesterday, don’t use it as an excuse for grade drop - especially when you had so much else on your plate.
In the end, rank and use what’s most important to you, not others.
With ECs, there’s unlikely a this is better than that. Either you’ve checked that box or you haven’t, more likely. And I’m sure you will.
Good luck.