You should not let any outsider, including your domestic help, enter your home. Call & inform your neighbours or secuirty about your situation.
Use a separate bedroom and a bathroom, if possible. Do not mix your used dishes or clothes with other members.
Sanitize the entire house once the infected person enters isolation.
Use separate utensils & wash it using gloves.
All members need to wear masks & check for symptoms
You need to eat nutritious food. Your diet should contain lots of protein like paneer, nuts, spinach, dals, seeds and lean meat.
Practise the proning technique & monitor your ocygen saturation levels (SpO2) using an oximeter
You need to isolate for at least 14 days since the symptoms first showed. If your symptoms subside within this period, check with doctor before ending your isolation