It may or may not be 3 cups of bleach per night. I'm sure somewhere in your other thread, someone has given you the reference amount for your pool's bleach doses. (EDIT to add: In your pool, each cup adds about 0.7ppm of chlorine.)

What you need to do is test your pool each evening and then add however much bleach it takes to get your chlorine back up to about 6ppm. If you find that by the time you test again the next evening that you have dropped below 3ppm, then add a little more to get to 7ppm that evening. You want to make sure that you don't let your chlorine drop below 3.

You may want to raise your CYA up to 40-50. Most people find this makes it easier for them to keep chlorine in the pool. You can either use dichlor for a little longer, or some trichlor pucks or add a little CYA separately. Your choice.