I'm about the same age as you (43 yo) and my workout schedule and time "non-constraints" are similar. I would lift all the time if I could.
Consider the issue of overtraining if you don't recover, but, probably more importantly, consider what the proper length of your workouts should be.
If you're lifting alone, and lifting heavy weight, don't let a session go too long. Your body will generally fatigue and your concentration will lapse. The next thing you know, you pulled a muscle, broke a bone, etc. Our older bodies won't heal like they used to.