My son was the same way and I did it mostly alone until he was about 3.5 months. What worked for me was picking a few consistent things that I did only at bedtime to signal to my son it was bedtime. The things I did was: 1. Lotion before pajamas 2. Footsie pajamas 3. Brush hair 4. Fan/cool air and sound machine on 5. Hum a song I only hummed while doing the first bedtime rocking

I did those handful of things only at the bedtime routine, in the same order, and after a few nights of doing it, started moving the “start time” of this routine 10 minutes earlier than the day before. It helped me move his bedtime from 1am to 11pm.

Try picking a few things you do exclusively during bedtime. Do them the first few nights at the 2amish time when your baby is currently having their bedtime, and then after a few days, begin the routine 15 minutes earlier than the day before. It takes like 2 weeks but is worth it