Currently, there's no way to reduce the sync time other than to get a copy from someone else/another device of yours or get better internet.
Though Lightning nodes can run on Neutrino which is a light client until the sync is complete.

At this moment, Lightning gossip seems to be not too big of an issue. When it does get too big though, the only solution is to reduce channel updates and/or public channels.

Semisol

bitcoin

Ask SN: what's a Bitcoin/LN topic you want explained?

What options are there to deal with the ever growing initial bandwidth requirement and sync time when starting a node? And how bad is this problem? And does LN have similar problems(the graph and gossip gets bigger and bigger as network grows?)