I've put my workouts (from early November) into a spreadsheet so I can do some analysis.
Firstly, so far I have done approximately 540 sessions. This averages just over 100 per year. So on average I lift just over twice a week.
First problem: I don't train enough times. I know my average is down because, over the years, I have taken a lot of time off (for various reasons), but even when I'm not taking time off, I still frequently miss my target of three sessions a week. Therefore, I am going to endeavour to train more frequently.
Secondly, I looked at the amount of sessions I have had per weekday, just out of curiosity:
Monday 135
Tuesday 35
Wednesday 120
Thursday 26
Friday 138
Saturday 51
Sunday 35
No surprise that my main training days are the classic Mondays, Wednesdays and Fridays. It also came as little surprise that I rarely train on Thursdays either. Often if I miss a Friday I'll go on Saturday instead, putting it ahead of Tuesdays, Thursdays and Sundays.