Can anyone help me with these symptoms?

Da

My baby will be 8 Weeks on Wednesday and these last 3 days have been horrible! He has gone from taking 2-4 hour naps in the day to not sleeping at all unless we're in the car or in the stroller.

He's been drooling so much he has to wear a bib all the time, he rubs his face on everything, chews on anything that can go in his mouth, spits up after every feed and is just constantly crying and fussing.

My ped said it sounded like the 6-8 week fussiness peak or his 8 week leap started early due to him being born at 41+3.

Anyone else gone through this? He was such a happy, expressive, good sleeping baby before this! Inhate seeing him so upset :(