The goal of this clinical trial is to design an online Cognitive Behavioural Therapy (CBT) and Acceptance Commitment Therapy (ACT) program and to learn if it can treat anxiety in women transitioning into menopause (perimenopause). The main questions it aims to answer are: * Is our online psychotherapy program a practical and acceptable means of managing anxiety during perimenopause? * Does our online psychotherapy program work in improving anxiety levels during perimenopause? Participants will participate in weekly e-CBT module sessions tailored to perimenopausal anxiety and will be given weekly feedback on assignments from trained care providers through a secure online platform. Participants will complete questionnaires at the beginning, middle, and at end of the study, as well as at the three and six-month follow-up.