Newborn refuses to eat

Hi!!

So my 1 month old eats around 9-12 times daily with 2-3 of them being cluster feeding.he has at least 8-10 wet nappies.but this evening he ate at 11:00 and 2:30 which is his usual,then had a 5 min eat at 4:30 so not considering it a feed and woke up at 6;30.from 6:30 to 7:30 he was awake and playing,smiling really aware but he didn’t want to eat.he slept again from 7:30 to 8 and when he woke up he still refused to eat.by refusing I mean he slept on the breast after 5-10 min which he never did before.I put him to bed but wakes up after 2-4 min but just doesn’t want to eat..he doesn’t have a fever or anything and I know that from 2:30 is a long time without a feed...please any suggestions?