Sounds like thats reasonable. Too much is when your body says "ive had enough for now." You only can be the judge of whats too much. I know when to stop when I start getting dizzy,out of breath,hurting, or extremely fatigued. If you feel great, keep doing your normal activities. Your the best critic for your body. Take care
I've been picking up yards of dirt in my truck and shoveling it out. 3 loads so far and yeah there has been a few times where I tell myself I need to stop.
I'm a workaholic so dialling it back has been hard for me. But i know when my body has had enough so I'll stop for the day. I've gone from doing 18hr days to 10-12hrs and everyone reckons that's still too much. Listen to your body, only you know when you need a break.