I never received dust spam, but if I would get it, I'd just
consolidate all inputs at that address while fees are low.
I'd be happy with 546 sats too! Be a nice way to fund at least 2 transactions. I'm intentionally bad at coin control, I set wallets to preserve fees as apposed to preserving privacy.
Electrum has nice coin control features. You can host a private electrum node and use that personally if you want more control, I'm not sure what bitcoin core has I never generated an address on it.