Sort-of enabling here:
1. That log is much lighter now, it likely was not totally dry when you hauled it out? I thought
@bgmathteach was suggesting a new roost lower down, not moving the big one though. So you would have a nice ladder situation. However, you may be worrying, as I would, that like humans, chickens tend to prefer the "this is what we've always done and it's been fine!" line of thinking. Any big ol' ladies that maybe ought not to would continue to try to use it, and get themselves hurt anyway. So I would lower the options by lowering the log if this is a worry.
2. If the log is indeed very heavy I would strategically place sawhorses and any needed lumber under it to support it. Also strap the log to a couple of places, like good screw-hooks into studs. Then you can remove and reattach the brackets. Finally, each log end could be lowered gently via the straps to the new height.
Eggs -
Probably
@bgmathteach is right, we'd have to have new littles every year and time it so they're coming into lay during the Winter. My plan is to stagger a group of 3-4 every other year. But that won't avoid eggless winters. Of the Buff Orpingtons here, July 31 2023 was their hatch-day (late) and only Annie has started back up laying, just last week. So we're getting one egg every three days it seems. She was pinking up for a few weeks before that and got even more talkative and kept visiting me to chat, which I loved - though it was more like a vigorous speech or lecture close to the big day - as I cleaned the coop and nestboxes. She had very important news!
If you added a pair or trio of youngsters each spring (say, late march). THEY WOULD BE LAYING late fall and through the winter when everyone else is molting/taking a break. See, I have done the research on that...and have empirical proof of this fact!
simple & easy fix!
feed me, pick me up, Dorothy is picking on me… make the bad boys go away…. 
She sure was a good leader there.
