I could use some advice. We are sleep training our 8 month old and have hit a serious wall. Here are the details:

-Great napper (2.5+ hours day), and can put himself to sleep for naps and bedtime. Can soothe himself (when he wants to ). Goes to bed around 730pm.
-Eats well during the day (25 oz+ of formula and breastmilk). Starting solids but he is ingesting very little at this point.
-Has consistently been waking to nurse around 5am for the last 2-3 months. We were okay with this, as he would go back to sleep until 7am. However, it seems to start a bad pattern of needing to feed at night and the wakeups got earlier and more frequent (2am, 3am...) so we decided to night train completely with the goal of the earliest feeding at 6am (ideally 7am).
-Responded great to training for earlier night wakeups but still wakes up at 430-530 daily and screams his head off to eat. Soothing him does not help, loveys do not help, CIO does not help (my limit is one hour).

So, do we give in and feed him at 5am like he wants? A week of training hasn't helped much, except one day he woke at 6am like we would like. How long do we keep trying before we throw in the towel? We trained my 3YO at 4 months old and it was so much easier than this time around!! Thanks for any help.