Reoccurring sinus infections and pinkeye the last 5 months

I've been volleying back and forth between sinus infection and pink eye infections since early March. I've had several rounds of antibiotics for each issue at this point and too many appointments between my PCP, Optometry, Opthalmology, ENT and Neuro. I may go a week or two being relatively clear and it seems like I've responded to treatment, only for symptoms to trickle back and I'm back to where I started. I'm not sure how seriously the ENT is taking me because my CT scan was interpreted as mild fluid/infection and my bacterial count was relatively low on the culture they did (although I tested positive for strep pneumonia and gram neg). I am pretty much getting no relief from over the counter sinus meds, Sudafed, Flonase, netti pot, saline rinses, eyelid cleanser etc. I also had a recent ER visit, which didn't really do anything either. They sent me home with steroids that I can't even take. I've been having tendon inflammation from a prescription of Cipro I finished recently and don't want to risk tendon rupture further by adding on the steroid. My pharmacist also gave that a big hell no.

The other perplexing part that my neurology team is having trouble with is that my IgG is 725 mg/dL and my IGM is 15 mg/dL back in June, so they haven't outright categorized me as having hypogammaglobulinemia (where they see that IgG fall in the 500- 600 range).

I've got a consult with immunology next week. I am hoping for some sort of intervention because the other specialists have already thrown their last line of FQ antibiotics at me. ENT is not pushing for surgical intervention on their end, not sure if that would really do anything anyway. Neuro definitely thinks all of this is compounded by Rituximab. I was never this sick when I was on Kesimpta and the only reason I'm on Rituximab was because of my insurance.

Has this happened to anybody else? Are there certain labs/panels I should talk to immunology about? Should I push for IgG infusion? Any other helpful questions I should ask them during this appointment?

I have been so sick for nearly half a year with no relief and I'm just so frustrated and sad at this point. I am tired of feeling dismissed because my labs/ scans aren't matching the severity of symptoms I've been experiencing. I am worried I'm going to end up hospitalized or worse between risks of pneumonia, sepsis, eye damage etc.