Sleeping through the night tease

Last week when my son turned 10 weeks we seemed to turn a corner - he started sleeping through the night from about 8 or 9 pm to about 6 or 7 am. This lasted for a solid week and it was amazing. Then last night he was down at 8 and up at 1, 3, and 5 and he repeated the same pattern tonight 😩. He takes anywhere from 28-32 ounces of formula during the day and he had 34 yesterday but he chugged a 4 ounce bottle at 3 and again at 5. I can’t figure this out and it’s so frustrating after a solid week of sleep. Any mamas experience something similar and have suggestions?