sleep when the baby sleeps 🙄

Trust me I want to!!! But I'm having wicked insomnia! My son is 3 weeks old and I have the worst time falling asleep at night. It's like I can't shut off. He's been doing awesome sleeping at night,4 hours stretches now! I normally don't go to bed until his last evening feeding around midnight or so, give or take. Mainly because my SO works nights so I wait until he leaves. Then I normally clean up around the house. Because I'm seriously a neat freak and it's gotten worse since the baby has been born. I can't sleep knowing the kitchen is a mess so I have to. Then once it's time for baby to eat is when we go into the bedroom for the night. Then once he's finished I sometimes lay there two hours! I waste half of the time he's sleeping in between feeds trying to sleep! Then in the night after he's ate sometimes I can't fall back to sleep for an hour or two after he is back in bed! I'm exhausted during the day but I'm terrible at napping, I always have had the worst time sleeping during the day.