Leaving Consulting after 5 Months

Hi All,

I am in bit of an internal struggle recently as to what to do. Some Background:

My education is in tech and I was a SWE in undergraduate w/ experiences at F500's to startups. I Made the decision 1.5 years pre-grad I would try to shift into consulting. Went through the casing process and swung offers at B4, a boutique life-sciences consulting firm and a fairly new to the US, but well-established in europe in-house strategy consulting firm.

For better or for worse I chose the in-house consulting job thinking it would be an extremely unique opportunity over the B4 firms and boutiques. The team is roughly 15 and relatively new to the U.S. I was sold on the pipe-dream of more external clients, a larger team(maybe some fault of my own but it was always communicated that the team was ~100), and strong training.

Flashforward, I received 0 training, have been consistently berated with minimal guidance, and find the value prop of the in-house consultancy in the US to be questionable. (There are no true experts in any specific vertical.) As an AC/BA w/ 5 months of experience, I am on a project w/ another C also new to the firm with a PM staffed at <50%. Another problem is if you don't get along with a PM, it is inevitable you will work with them again due to team size. I don't find the consulting processes here to be tried and true and instead find them to be more process-focused vs market-focused. I am seriously considering leaving ASAP but question what jumping ship 5 months in looks like.

I am pretty focused on joining a startup but am questioning my pitch to go into a bizops/PM role if most of my experiences in the past were of a strong technical background.

Another poster summarized it as "My experience in MBB was a bit like the Wizard of Oz, when you're promised magic, but behind the curtain, it's just a little bald white man making up shit :)" and I find this to be consistent coming from a hard-sciences highly-technical background

Thoughts? Opinions on leaving/jumping ship early? It always seems people in the forums wish they would have left earlier.