@charlieindia I too am someone who has had Heart rhythm issues and have been on Carvedilol. I noticed you mentioned about stopping but I would advise against that. I can't add much but seeing the right type of Cardiologist is super important. Within the speciality area of Heart rhythm arena there are even 2 types, ones that handle the upper heart like for afib and ones for the lower heart for Ventricular tachycardia but both are in the speciality group of EP Cardiologist and handle the electrical areas. So I would look for one that specializes in that area. I also had PVC once in a while but from my experience they are not usually a problem and many people have them and are not treated for them. I was told by my cardiologist that mine we're never long enough to get concerned.
I also noted you mentioned in another area that you Lost your wife 9 years ago I am so sorry and my prayers are with you. I will share also that from my own experiences that Heart rhythm issues can be brought on by stress kinda like a 2 edged sword, having the thoughts about your next episode can help bring it on. It a form.of PTSD, so you might want to seek maybe some way to help reduce anxiety. For me I used to actually tell myself im fine it's not really a problem and order myself to stop worrying. I hope that helps and please let us know how you make out.
If you like and share where about you are maybe someone might know a great clinic of Doctor in your area.
Have a Blessed Day