You don't. It's a one way street.

I say this as a Bitcoiner for 15 years having seen many Bitcoin OGs (2009-2012) turning to Monero and never looking back.

It's almost if it is an established trajectory from fiat-nocoiner to burnt crypto-shitcoiner to Bitcoin maxi to Monero cypherpunk.

In the beginning it was a bit easier as the shitcoin phase not yet existed because there only was Bitcoin. But back then many nocoiners also thought of Bitcoin as a shitcoin-ponzi ignoring the glass house they were sitting in.