Prima facie, I don't see a problem, but ultimately the responsibility does not belong to the committee; it belongs to the House itself, and then the House itself has to realize that if it's changing a vote in a significant way, the government can treat this as a vote of confidence. So there are some unfortunate constitutional limits.
You might want to change it. You might want to say that every year there is a certain number of votes that can be changed and those will not be construed as votes of confidence.