With my previous T I had two sessions per week and I thought that I wouldn't survive if I had it only once per week

But now I actually have it once per week and it is somehow easier to go back to my daily routine between sessions - but that's me. from your post I understand that you have already had sessions once per week and it was not good for you, have you also already had 90 min session? Maybe it would be much more efficient than 45 min and it would be easier to wait the whole week till the next session...
What also works for me is that I "control" the time, I look at the clock at T's office very often, so I somehow know when I have to start talking about something important before it's too late and usually few minutes before the end I stop talking about difficult stuff - to not get disappointed when T says "that's it, see you next week"...