Yes, you can convert the whole thing in 2024. There is no limit on the amount that you are permitted to convert.
You seem to be saying that you have no other funds in traditional IRAs, so if you convert $6,505.40, $6,500 will be a nontaxable conversion and $5.40 will be a taxable conversion.
There is no good reason to convert less than the full balance in the traditional IRA. You might still end up with a little bit in the traditional IRA if a small amount of interest is credited to the traditional IRA after doing the Roth conversion.
