I have a peer that has been offline for 6 days 2 hours. How long do you give a peer

Any time after a week it's fair game in my opinion. It's for the safety of your and your peer's funds. Just make sure you use a sufficiently high channel closing fee so your closing transaction goes through swiftly. Currently you can get away with just 2 sat / vB, but best to check the mempool to optimize: https://mempool.space/