All I am saying is that not every wallet you can use with Nostr apps is self-custody. Keep VERY little on the wallets that aren't, especially the ones where you don't know the custodian from Adam. I wouldn't even keep up to 1 million on a custodial wallet.

Get it over to a self-custody lightning wallet. Even something as simple as Phoenix wallet will work for that purpose.

Then transfer from your self-custody lightning wallet to cold storage once you have enough for a 1 - 2 million sat UTXO.