Sorry if this sounds to simplistic, but can you call it full time if you aren't really full time?
I always thought you wouldn't be able to count it as RLE if you weren't living as a woman 24/7.
I know that there is an out in the WPATH if you can't present as female for certain reasons but this wouldn't apply in my thinking unless the employer wouldn't allow it.
From the WPATH Standard:
The duration of 12 months allows for a range of different life experiences and events that may
occur throughout the year (e.g., family events, holidays, vacations, season-specific work or school
experiences). During this time, patients should present consistently, on a day-to-day basis and
across all settings of life, in their desired gender role. This includes coming out to partners, family,
friends, and community members (e.g., at school, work, other settings).
Health professionals should clearly document a patient's experience in the gender role in the
medical chart, including the start date of living full time for those who are preparing for genital
surgery. In some situations, if needed, health professionals may request verification that this
criterion has been fulfilled: They may communicate with individuals who have related to the patient
in an identity-congruent gender role, or request documentation of a legal name and/or gender
marker change, if applicable.