2 month old crying a lot out of nowhere

Ariana

The last 2 months he barely cried at all and now out of nowhere it seems, he cries at just about anything. Especially at night. It might be gas. It might be lack of sleep (he’s having a hard time sleeping). But we aren’t sure what to do. The only thing that ever seems to comfort him is breastfeeding but I can’t constantly feed him.