I'm not the best daughter or Muslim out there but I care about my parents. Both of them are Muslims and I was raised a Muslim but the extent of our faith is questionable. When I was younger, they did set up a good example. My parents regularly prayed and we would do jemaah prayers. Gradually, our faith dissipated. I said 'our' faith because I myself am not a perfect Muslim. Sometimes I don't know what comes over me as there are times when I miss out on my prayers. I am trying all I can to do them as it is wajib. This is even more difficult as my parents are being what I don't want them and myself to be. I don't know how and it is perfectly human but we have gone astray. They don't pray anymore. I don't know what to do because it feels weird. Even though I feel that it is the right thing to do to confront them, I am scared that I would offend them. A child correcting their parent? They might take it the wrong way. My mom is not too bad. She knows it is important but she is too distracted with taking care of my younger brother. My dad is a completely different case. He used to be so strong spiritually - never neglecting his prayers and he would always perform dzikir. I don't know what has become of him. He is not doing haram things like drinking of that sort but he is becoming that of a Munafiq. I am so worried for my family and myself.
Please give me advise on how to strengthen both my iman and my parents', especially theirs.