Sleep regression?

My son is almost 7 months, and has consistently slept through the night since about a month on. The past couple weeks he's been waking up at around 2-3am crying and the only thing that calms him is a bottle. He then will go right back to sleep and usually won't wake up until his usual time. Some nights he'll do this twice before the morning.

Anyone else going through this? I feel like we're at the newborn stage again lol this mommy works a 40 + hour job and is tired