God I'm exhausted

Just a tired mumma's rant 😓 My five week old was doing so well with his night time sleeps, sleeping from 11-3.30 awake for an hour for a feed change and burp and would talk to himself for 20 minutes while I pumped then I could get him to back to sleep until 7/8. The last couple of nights he's been so clingy and won't go back to sleep unless he's laying on me and then wakes up when I put him back in his bassinet. He's always been clingy through the day and contact naps through the day. So now it's like we're back at square one, week one and I'm holding for like 20 hours a day. It's so exhausting as I can't sleep very well when he's in the bed with us.