Toddler being clingy

Mi

My son is almost 2 and I’m due any day now with my second. He’s become super clingy which I read happens. But I feel like his sleeping has gotten worse. He now wakes up 1-2 times a night and refuses to go to sleep unless he’s cuddling or I rock him to sleep. We hunt had this issue since we was 8 months old.

I’ve been trying to cry it out, console him and not pick him up, have my husband get him. Nothing works. Last night we were up for 2+ hours because I didn’t pick him up and cuddle him to sleep. It’s becoming worse and worse as the second baby nears.

Any tips on how to get him to sleep thru the night?