The problem is he can’t. The funding was already earmarked back in 2016 through 2026.I see what you are saying but I think that the voters will ultimately push Biden to act. He will lose Georgia because of black voter apathy. He can’t afford to lose Michigan.
In order for that to change you would need Congress to pass a law revoking those funds and the votes for date don’t exist:
In fact Congress seems more likely to send further military aid.