He has to be teething

Slober, Slober Slober and then some. Chews on anything. Tyson's sleeping schedule changed this last week. Cries more when he wakes up in the middle of the night. Last night I think he was awake more than asleep. We are letting him cry it out for a while and sometimes he will fall asleep others he continues to cry. Using Motrin. Suggestions are welcome.