Help for 5 month old to sleep

Rachel

We’re 5 months in and my daughter is up constantly at night and has been SINCE THE BEGINNING. I will take any and all advice. And product recommendations that helped you be it sleep sacs, cribs- anything! Some background info- she currently sleeps in a bassinet by our bedside in a halo sleep sac. She sleeps the first 4 hours soundly without waking. Then the rest of the night is a hot mess. She is bottle fed. Help. No seriously, please help.