We also got to do a "free test drive" for online (home) school during my daughter's 7th grade year, during COVID. Our public school offered a free year of online school as an option students in our district. Her training schedule was 20 hours a week, 5 days a week. Afterwards, we didn't want to go back to conventional school.
As some have pointed out, it's not a one size fits all solution and I don't think we would have explored this when my daughter was in compulsory levels and the practice schedule was not as strenuous.
We are doing an online program, as opposed to traditional home school. The positive for this is that her mother and I can be fairly hands off, which for us and our situations, is a good thing.
Our daughter is a good self starter (thank goodness she is much better than I was at that age) so this is another aspect that might not fit everyone and every personality type. If grades would have suffered due to not being disciplined enough to do the work on your own, then personally I don't think we would have continued with online schooling. Fortunately we haven't had to worry about this.
Some of the positives:
Mental and physical state is much better as she has much more time for recovery on both. She is able to get more sleep and she can eat when and what she wants. Her stress levels are lower during the day when she's working at her own pace.
Even though she was good at this to begin with, her time management and organization has gotten better. In some ways I think this is a good prep for college, in terms of scheduling your time and disciplining yourself to complete tasks on your own.
Some of the cons:
Missing out on social activities in a public school. Fortunately our daughter has friends at the gym, as well as at church.
Missing out on classes that have "hands on" type instruction. Most notably art and music/choir.
Cost. We are doing online school, so there is tuition cost. Compared to a local private school, it's not a lot. However I know that everyone's situation is different and paying this on top of gymnastics tuition can be even more taxing on the finances.
In summary, for our situation, we are very glad that we made the change to online schooling and if we were to go back knowing what I know now, I would do it again without hesitation.