How to get past Quantum concerns

Looking to DCA into Bitcoin small amount for the long term.

I understand the bull case and why BTC can be seen as valuable. But I’m trying to understand the quantum computing risk.

If quantum computers can eventually break Bitcoin’s public key cryptography/signatures, which seems like an inevitable future, before BTC adapts, what realistically happens to Bitcoin?

And even if quantum resistant cryptography exists, wouldn’t implementing and enforcing that migration across Bitcoin be a huge technical/governance mess?

Its the major thing holding me back from putting my money into it.

Thoughts?