Can I shorten fw_update download timeout?

[Luke Small]

I make unbound connect to dnscrypt-proxy and after an update, it’ll just
sit there for what seems like 2 minutes while fw_update inevitably fails
before turning on dnscrypt-proxy. I’ve been running snapshots and that’s
really dumb. Or is there a way to have unbound connect to a failover server
when the default resolver isn’t responsive that I’m not aware of?--
-Luke