Lip lift care - how long after the surgery should I be cautious with mouth movements?

Hello, I got a lip lift almost 3 weeks ago. I am still a bit swollen and my upper lip feels stiff/numb. I realise this is fairly normal, but also suspect I am healing slightly slower than average. I am still trying to limit the movements of my mouth when talking/eating/smiling and still follow a soft food diet to avoid chewing. I'm wondering how much longer should I keep following these precautions? I'm conscious that I have some internal sutures which need to heal.