I think going every other week can be less effective if you have a lot to talk about and/or have difficulty opening up after not seeing your therapist for a while. When I have gone to every other week, it has usually been when I'm entering maintenance mode and thinking about stopping altogether. But some therapy is probably better than no therapy if you feel like it could be useful right now, so it doesn't hurt to ask your therapist if they will work with you this way.