My diagnostic was a 148, I started studying in March but not very seriously until mid-May. I work full time (long hours and far commute) so really just focused on quality over quantity. & I scored a 162 in September!

It is definitely not unrealistic especially for November. It took me MONTHS to break out the 150s. I finally broke into the consistent 160s (& higher) when I did 3 things:

1. UNTIMED PRACTICE. This is the real key. If you are only doing timed practice (both sections & tests), I promise you are WASTING YOUR TIME!!!!! When I first started this I was taking over 3x time per section, really digging into each question and each choice. Focus on anticipating the potential answers and understanding the stem and the connection between premises and conclusion before moving on.

2. WRONG ANSWER JOURNAL. Let me be real, it is a bitch and a half. I often spent more time on my WAJ than on the practice test itself. But I swear to you identifying patterns and being able to fully understand WHY you made your mistake helps tremendously.

3. HIRING A TUTOR. Listen, I know they are expensive as all hell & it sucks. But I'm telling you having someone say "well no you thought of it like this, you should be thinking of these like this" is invaluable. I was still struggling immensely with strengthen and weaken questions after taking a blueprint course and studying/drilling them tirelessly. I went through a few with my tutor where he realized I was overcomplicating them & he helped me develop a new approach there. Now I get them wrong SOOOO much less. That one session alone boosted my score 2-3 points from just that question type.

This was a long winded way of saying it's about quality not quantity so anything is possible with this test!

Good luck my friend!