Help! Do not know why baby is not sleeping at night.

I have no idea why our almost 9 month old is not sleeping well at night. I do not know if I am doing something wrong. Any suggestions would be much appreciated. This is his schedule for the day.

Wakes up 6ish

Bottle close to 7

Nap at 8

Solids at 9

Bottle at 11

Nap sometimes it vary but usually between 11 or 12 just depends if he is tired

Solids at 1

Bottle at 3

A super short nap sometime between 3-330

Does not sleep past 4

Solids at 5

Bottle at 630ish

Bed at 7ish

Should I try cereal in his last bottle? He does not get a bottle through the night now. He wakes up often sometimes I just need to give him his pacifier and sometimes he wants rocked back to sleep. I tried the cry out method like a month or two ago but I just could not handle him crying so hard.

I just feel lost, tired, and no idea what I am doing. Being a first time mom and trying to figure this stuff out is so hard. Any suggestions would be great! Thank you!