your confusing me little one!

So the past three nights my son sleep has been really strange!... first night every 3- 3 1/2 hrs wake up to eat, second night slept 7 hrs and then woke up and ate then slept one more hour. Last night woke from 8:30-12:30 then woke up wide awake and just wanted to play until 2am! Then slept 2 1/2 more hours until he wanted to wake up and play. Now it's 12pm and he has been sleeping most the day! Wth little dude! I think it's a growth spurt? What do y'all think?