Many keyboard apps can predict your next word. Download a matrix with 20k English words, showing the probabilities of each word. Arbitrarily choose the first word. Consider the most likely next 8 words for your current word and choose one of them in a way that encodes your 3 bits. Continue until all your data is encoded by groups of 3 bits.
To be safer, I would rather have everyone tracked except me, because I know how to use encryption tools. If criminals want unencrypted communications, that's also their choice.