Actually one can be perfectly Krishna-Conscious without being literate. Education is not necessary. Simply it is required to accept the fact, that we are the eternal servants of Krishna, and engage in some tangible service. Otherwise, there are so many convincing arguments, i.e. the Bhagavad-Gita, to bring us to the right point of surrender. Even the Karma-Kanda, and Jnana-Kanda, sections of the Vedas are designed to bring to the proper Sidhanta, conclusion. And that conclusion is made by Krishna in the Gita, that one who knows the purpose behind the Vedas, surrenders unto Him.
Four things can be surrendered:—Our life, our words, our intelligence, and our money. So just try to gradually engage these things in Krishna's Service. One thing you can enquire from Damodara, is about our Life-Membership-Program. Here in India we have now over 2000 members, including may prominent men.
You are a learned gentleman, a medical doctor, so kindly apply your determination, to understand this Krishna-Conscious movement, and I am confident that Krishna will bless you more and more. Kindly just read our books, and help us as you are able.