Some knowledgeable people gave me 2 options:
1. I wait until the mempool is less congested.
2. I pay a miner to include my transaction.
At the moment, yes, those are your only two options.1. I wait until the mempool is less congested.
2. I pay a miner to include my transaction.
When you broadcast transactions to other nodes, each transaction must pass all policy requirements on its own merits. It doesn't matter if you also broadcast a CPFP transaction with a high fee - receiving nodes will not at present consider both transaction as a unit, and so the parent transaction with the low fee will not be accepted.
However, there is a proposal known as "package relay" in active development which would change this. This will allow you to broadcast a "package" of transactions, and have receiving nodes consider the overall fee rate of the entire package, not the individual fee rate of individual transactions. See here for more information: https://github.com/bitcoin/bips/pull/1382. This means that you could simultaneously broadcast your low fee timelocked transaction along side a high fee CPFP transaction, and have nodes accept both based on their overall fee.
