I would.
I'm not an internist, but my specialty ends up with a lot of residents coming back to GME after GMO interludes. They are almost without exception weaker than their classmates who came straight from medical school when it comes to academic medicine. They are particularly weak on non-MSK anatomy (what are the afferent vascular sources that supply blood to the liver), physiology (how could this patient's hypokalemia be related to the citrate bolus she received during her GI bleed resuscitation), and quizzable medical minutiae (what is the defining mutation of chronic myeloid leukemia) which is expected because this is the sort of knowledge is reinforced during medical school and not as a GMO. Many of them also have a seriously hard time readjusting to the time requirements of residency. The GMO day ends at 1630 and and the next day's schedule consists of an 0530 squadron death run, meetings, and a hail and farewell in the afternoon. A resident's day "ends" at 1630 too, but tomorrow you're going to have to round on that patient with antiphospholipid antibody syndrome and if you don't know more than you did today, I'm gonna let you know that you didn't meet my expectations. Add a spouse and a family that weren't there when you had similar time requirements as a medical student, and you can see how difficult it can become. Of the couple previous GMO residents I've had who were total failures, half were people who should have probably never been admitted to medical school and residency was where they eventually flamed out, but the other half could never get readjusted to the time requirements and fell progressively behind leading to eventual dismissal or board failure.
I usually have a talk with the previous GMOs the first time we work together where I tell them that I respect their previous service as GMOs. They were put in a difficult positions doing an important job overseeing the health of their units with minimal training and did the best they could which, in and of itself, buys them respect from me as their attending. I frankly explain that they will likely be behind their classmates straight from medical school with regard to medical "fund of knowledge". This will probably require that they work harder and put in more hours than their classmates to catch up. I explain that they will probably get shown up by their classmates during group teaching sessions and that they should use those slights to their pride as fuel to go home, do more reading/preparation and hold their own the next time. I explain that previous GMOs have a lot to offer the program because they generally have the maturity, wisdom, and equanimity that comes from being an independent provider and their classmates do not. They also have a knowledge of how the military really works that is incredibly valuable to their classmates. I explain that I give a pass for fund of knowledge issues to former GMOs for the first year. After that year, if you aren't cutting it, I'll recommend you for remediation or probation just like anybody else.
My recommendation to you is to go back to second year of medical school and do the things that worked for you then. Podcast lectures, Step-1 Q-banks, Robbins, medical school syllabi, whatever. You want your knowledge to be comparable to the residents coming out of medical school, and for that you need to go back to medical school.