Help!! Sleep!

Okay mommas! So my 3 1/2 month old was sleeping great! Through the night for weeks now. But for the past few nights he only goes about 2-3 hours ( if I’m

Lucky) before fussing for his pacifier!

He keeps losing it and crying and fighting the sleep on his own, he isn’t even hungry just restless. I tried changing and feeding him and it comes down to the same issue, he starts moving like crazy and knocking the pacifier out.

I’m getting no sleep ! How do I help him learn to self soothe without the pacifier? And help his restlessness? Throughout the day he seems exactly the same so I don’t think it’s a leap.