8 month old night sleep

I am in need of advice. My son used to sleep good going 4-5 hour stretches, but ever since he got his first two teeth and separation anxiety started he wakes up every two hours. Sometimes I can get him back to sleep and in crib most times though he won’t resettle until he is in bed with me. You would think he would sleep great with me since he will resettle in my bed but he wakes up so much more in my bed. During the day he does great for the most part sleeping in his bed. I don’t know what to do! I need more sleep than what I am getting. I have no help at night. My husband is on the road 5-7 days at a time is home maybe 2 days at a time.