Oh, what a night!

Where do I start... Thank goodness Andrew was starting his night shifts last night otherwise I probably would be pulling my hair out or passed out any place other then my bed. Rylen use to be a great sleeper at night. He would sleep anywhere from 3-8hrs at a time but things have changed. The past few days he wakes up crying after 1-1 1/2hrs. Sometimes we let him cry it out but he gets so hysterical and has tears pouring down his checks we give in. If we pick him up he will snuggle right up and go right back to sleep but as soon as we put him back in his crib he wakes up crying again. We have tried using a sleep therapy machine (white noise), putting warmer or cooler clothes on him or keeping him up later but nothing seems to work.
Andrew is on night shifts for the next 2weeks so its up to me. If anyone has any tips on how to get him to sleep through the night, to have less feedings at night and to want to sleep in his crib I am all ears!!!!