The next step is to get some sort of weekly routine sorted

This means sitting down with your teen and deciding not telling them when theyre going to do their homework each day, and how much study its reasonable for them to be doing.
In my view, homework is a critical part of academic success. It keeps the brain engaged throughout the year and not just when exams are approaching. It forces teens to go over what theyve learnt at school that day, which is crucial for consolidating information.
How much study your teen should be doing really depends on them and at what stage of the year theyre at. I was always good about doing homework at school, but honestly, I didnt start studying until the second half of each term.