Baby won't nap during the day.

My baby is 5 weeks and just in the last 2 weeks his daytime naps have been shit. He either misses them completely and will be up for hours or only manages a 30-40 minute nap. I don't know what to do!

I've been following sleep guides that suggest getting them down 45-1hr after waking. I've tried swaddling, rocking, nursing, white noise, holding him while he sleeps, etc. He just won't sleep! I'm becoming obsessed with wake times and his sleeping cues. It's just a horrible cycle of him being overtired. Help!

I feel like I'm failing him.