Talk to the guys you’re friendly with beforehand and let them know you’re just looking to survive. They probably already know you’re getting dropped each week and shouldn’t really care if you’re just hanging on as long as you can (unless you then contest the sprint, in which case they can and should work to drop you)
Survive as long as you can without doing any pulls, or doing minimal pulls. Once you can make it to the finish add in more balanced pulls until you’re doing equal work with the others.
If the group isn’t friendly enough to let you hang on without doing any work on the front then time your pulls strategically. Be on the front going up hill and just ride your own pace, make them come around you if they want to hit it harder. Don’t pull into a headwind, don’t pull downhill. Don’t close any gaps but stay tight on the wheels that are closing them. If the guy in front of you surges and there are people behind you let a gap open and have someone else come around and close it for you.