You must feed F/T I'm assuming. When you get the snake up to room temp by soaking in warm water, make sure you dry it off good so that way it doesn't have Aspen sticking to it. I've had a snake swallow Aspen before and never had any issues with my snake, but maybe somebody else can chime in and be more helpful. I wouldn't say 6 days is too soon, but a lot of people like to feed on a 7 day schedule. I can't speak for all snakes but some snakes will eat until they put it back up. I've seen this first hand with keepers that didn't do any type of research.