My T suggested in September, after I'd been seeing him for a little more than a month, that I should start seeing him twice a week instead of once. He did not have another regular slot open until November, so I have been going there twice a week since then. It does not affect the cost of therapy, and I don't work full time (and have a very flexible schedule which I mostly set myself) so having two mornings a week instead of one with T appts is not a problem.
Twice a week feels like enough, I think. I often wish each session was longer, but I don't think it would be useful for me to go more often. I need to live between sessions, too.

It became markedly easier for me during the rest of the week when I knew that I would never have a whole week to wait. The gap between Thursday morning and Tuesday morning does feel long, still, and T has remarked on that, too. But he doesn't work Mondays or Fridays. All in all, only a positive thing for me.