intermittent fasting question

Hello, I have been doing intermittent fasting for at least eight years. I am a colon cancer survivor of 19 years so it helps me because I have to watch and when I eat and drink as a result of my cancer. I pretty much do 16 -8 to 18-6 every day. I rarely do off this routine. This has also helped me lose weight and keep it off. My question is should I go off intermittent fasting for a day or so every so often. Any issues if I continue what I have been doing. Thanks Frank

thank you