In the book Cosmic, Liam is reading the book How To Talk To Your Teen to get parenting advice. Here is something I would would add to the book.
You need to be strict about your teen’s curfew. If you don’t set a curfew, they will believe that they can stay up as long as the want, so they will not get sleep. If they argue with you about the curfew, then you can take something away from them.You can let them stay up longer on a weekend or holiday, but on a school night they need to go to bed at about the same time every night. If you want to do this, you will have to have some sort of schedule. For example, you want to eat dinner at about the same time every night so they can get to bed earlier. Also, don’t set the curfew too late, because than there is almost no point in making one. If your teen doesn’t get sleep, they might start doing worse in school or not pay attention like they are supposed to. Now you are an expert on how to set a curfew for you teen and why you should set one.