I would do 25-30% daily or every other day, water treated with prime and also add live bacteria like api stress zyme +, many manufacturers make live bacteria which will help to cycle the tank faster but it's not instant, you can get pre seeded filter media off the Internet which will also help, with the live bacteria I would double dose my first treatment and then just add it once weekly at the recommended dose, so the first week you would add double the following week you would add the recommended, Make sure you treat the water you're replacing with prime if you can get it, do you do your water change it with a bucket or do you use a python?