I get about 4GB of updates twice a month, with a couple gigabytes of updates every week or so because of Nvidia and Flatpak. That’s Manjaro, though.
Fedora slowly trickles their updates into your system, but I don’t think it’s much smaller. You’ll get small updates every day rather than huge updates every month.
Not saying your switch to Linux was bad or anything, but maybe temper your expectations.