My 2 cents… as an instructor- I never had good lessons with students after they worked all day. They were mentally wiped out.
As others have said, I don’t recommend only flying once a week either but I will say if that’s all you can do hopefully you can be extremely flexible about that 1 day. I had a student who could only fly 1 day at a certain time each week and I think we missed 8 lessons/weeks in a row in the middle of training due to bad weather and equally bad luck. It was like starting all over again.