"Two things keep the IRS’ hands out of most people's candy dish: the $15,000 annual exclusion in 2020 and 2021, and the $11.58 million lifetime exclusion in 2020 ($11.7 million in 2021). Stay below those and you can be generous under the radar. Go above, and you'll have to fill out a gift tax form when filing returns — but you still might avoid having to pay any gift tax."
If you are transferring more than $10k at a time, your bank will have to file "is this a terrorist?" Paperwork with the government. So you should definitely do this A LOT to make them rifle through too much false flags.