Sleep regression already??

Rachael

My daughter will be 12 weeks on Sunday. She was (as of last week) sleeping 5,5-7 hours at night and going about 4-5 hours between feeds during the day. She’s formula fed. Now, she’s up every 3 hours at might again and eating 4-5 oz every 3-3.5 hours during the day. She only naps when I hold her, so I cannot sleep when she does.

Help! Is this normal? I’m so exhausted and drained.