Sleep deprived and needing advice!

My LO just turned 5 months on the 24th of June. He was sleeping super well but now wakes up multiple times during the night. Most the time the paci will suffice but eventually I have to bottle feed. He normally gets a bottle before bed(just the way his schedule works) but nothing has seemed to help with him sleeping thru the night. I’ve tried gas drops on multiple occasions and he is already getting rice cereal in his formula. Any suggestions or advice?