Shalom.
I observe the Torah yes. I would not want to do anything different from this, even if you asked me to or if I wanted to. I was circumcised at a young age, I do not remember or know how many times. That may be different than what you are talking about, except that in being circumcised I recognized the value of God's commandments in His Law especially per Yeshua's instruction to keep and teach the commandments. And when Paul said that what matters is keeping the commandments. He had Timothy circumcised. But not Titus, for the sake of the gospel, because it would have been compromised. If you are circumcised, keep God's commandments. If you are not circumcised, the same. Circumcision is one of the commandments of God. By keeping it or observing it or deciding to become circumcised in obedience to and in observation of the Law, one joins with the covenant people of God Israel and is a debtor to keep the entire Law. It is a must, a necessity, for this is a life change to observing all of God's commandments initiated with becoming or being circumcised. However, you may have the wrong idea about falling from grace, because making good decisions to keep or observe God's Law does not mean anyone loses standing with God in reference to God's grace. To reject God's grace in favor of law keeping, I can understand how that is unwanted, advised and recommended against. And, observing or obeying God's commandments does not mean that you are justified by the law, for no one can be. I was not kicked out. The church that I was attending had no problem with me observing and keeping God's commandments. They themselves wanted and desired to do the same thing. But not everyone chooses to observe all of God's commandments.
You mentioned the old testament and all its laws. I do not know what you are talking about. I knew about God's commands and commandments before anyone made reference to old testament laws of which I know nothing about.
Shalom.
Jacob