The idea of buying more bitcoin is not new, and Trump himself mentioned it on the day he signed an executive order establishing a strategic bitcoin reserve. He has ordered the Treasury and Commerce Departments to look into buying more bitcoin. But so far, they haven't figured out how and they're still leaving the door open to buying more bitcoin for a long time.
Honestly, I don't think they care about that and won't find a budget neutral way to buy bitcoin anytime soon without using taxpayer money. The only way they can buy bitcoin is to make bitcoin reserves "Act", otherwise there is no other way.