My 4.5 month old has been acting very differently last couple of days. Laughing excitedly and then immediately bursting into hysterical tears for no obvious reason, looking very very excited at times and then suddenly very upset. Could this be a teething symptom, or something else? I've not seen him behave like this before. Normally he's more even keeled and only cries for a specific reason you know about eg hunger.
Yesterday he was like this all day and harder to get down for naps as he was either excited or upset. This meant his awake windows got stretched and I don't think he had enough nap time. Consequently at bed time he fell asleep but woke up an hour later and then was awake for 3 hours crying, even once fed and comforted. This hasn't happened before abs is usually once he's down he sleeps (apart from feeding). I think the difficult bed time must have been as a result of being overtired from the day.
Starting again today I'm going to try and reduce his awake windows and ensure he naps, if possible try to extend his lunch time nap if I can.
Does anyone know what this could be- could it be teething, and is there anything else we can do? His cheeks were a bit red yesterday which made me think of teething.