This summary is not the rule. The rule text controls.
Your lawyer must work on your case in a timely and dedicated way. They cannot ignore your matter, let it sit without action, or drag their feet on important tasks. Missing deadlines can seriously hurt your case, and in the worst situations, it can mean you lose your legal rights entirely.
Your lawyer also has to manage their workload so they can give proper attention to your case. Taking on too many clients at once is not an excuse for slow or careless work. At the same time, your lawyer does not have to be aggressive or rude to fight for you. They can still treat everyone involved with respect while working hard on your behalf.
If your lawyer takes on your case, they should see it through to the end unless you both agree otherwise or the lawyer properly withdraws. If there is any question about whether your lawyer is still handling your matter, they should make that clear to you in writing. You should never have to wonder if someone is looking after your case when they are not.
If your lawyer works alone and something happens to them, such as a serious illness or death, they should have a plan in place so another lawyer can step in and protect your interests. This helps make sure your case does not fall through the cracks if your lawyer suddenly cannot continue working.