If in service to the Guru, household responsibilities stand in between, what to do?
No, it cannot come in between. Guru will only tell you to fulfill your responsibilities in the proper way. All the Gurus will say the same thing, do your household responsibilities well, but sit for some time and do meditation taking some time out for yourself too. Do not get drowned in worldly matters so that you become miserable. Just take a little time out for yourself and relax.