He has his bottom teeth already. They came out when he was 3/4 months old too, but don't know if he is teething now... But Calpol definitely helped him to sleep better last night I just don't want to give it all the time ...
Sounds like he's teething, is he drooling a lot? You can buy stuff to put on his gums for teething rather than using calpol and see if this helps. Does he take a dummy? Try putting the dummy in the fridge that'll sooth his little gums
Could he be teething? My 5mo got his first tooth 3/4 months so that’s when we experienced this sort of behaviour