If I can't pay estimate amount when filing extension, can I just pay the amounts online in a few months? Or do I need a payment plan?

If I file an extension and estimate an amount of about 1,000 more than I have paid in estimated taxes for the year.

Can I just make several online payments at random to the IRS? to make up the amount instead of getting a formal payment plan?

And will that cause any big issues once I finally get the final 1040 filed in October?

(I'm talking of 2022)

Thanks!