Consolidation is a process where you get multiple inputs and produce one output. Are you sure this is what OP needs? Because I think he wants to maintain multiple UTXOs. Which is btw the best thing to do.
OP's concern is about his privacy from his Whirlpool coinjoin being ruined from consolidation:
If they're all consolidated, you've just undone all the mixing previously.
He can consolidate his 20 UTXOs into one UTXO if he wants to (depending on their value), or he can split it into multiple UTXOs in case he wants amount of specific sizes.