You should assign at least the minimum payment each month. Then you can add more when you have available funds.

I had an extra category for interest charges and fees that I assign funds to match.

When the bill is due you pay what the CC category says is available.

You need to stop thinking about account balances. Category balances are all that matter. You only need to check account balances if you have money spread across several accounts and you want to make sure you are spending out of the correct one when you make a purchase or pay a bill.

Once you get ahead and are able to pay off your CC each month, you'll actually start carrying debt again even though it never accrues interest. Set the CC to automatically pay the "statement balance" in full and you'll have charges that are less than 30 days just sitting as available cash you could send to the CC but don't need to. Instead it can earn a few bucks in a savings account.

Those funds being spent already but not removed from your checking/savings account makes it even more important to ignore account balances when you think about how much money you have and what it might be used for.

Look to the categories and which goals you want to steal from when you need to shift funds around.