If you will return to your child after 10 minutes and you think they are asleep, wait five minutes more before checking. There’s no point waking a sleepy toddler!
There is a chance that you will find your child is still awake; in this case, try to calm him and promise that you would read one more story in ten minutes if he were quiet.
To make a baby or a toddler fall asleep is a tough job. You have to make a plan, stick to it, and keep a record to see how far you’ve come.
You need to be patient cause it will take time and energy. It is a hard habit to break, but with patience, firmness, and support this approach should do the trick.