As some will testify too it's very difficult living, to use a JW term, a double life. Do you think your mother would shun you? or if this is working for you, and your mum is non the wiser, can you continue the way you are? or is it that you want to make a stand against this faith?
You need to sit down and think what is best for you. Sometimes we attached so much of who we are to other people (parents, spouse, children) that you shove what is best and healthy for you aside to please someone else.
Welcome to the board - hope you can come to a decision.