Nocturia less than twice and day time urination intervals of more than 2 hours are still counted as acceptable unless they are associated with other urinary symptoms. If the condition keeps deteriorating and causes considerable concern, then consulting a urologist is the way to go.
The aforementioned symptoms are not specific and could be due to conditions other than prostatitis. Proper clinical examination and targeted investigations are required to clinch the diagnosis before administering appropriate treatment.
Detrusor instability can only be confirmed by urodynamic study coupled with cystoscopy to exclude other bladder lesions or else the diagnosis would be entirely empirical.
The captioned concern can be due to other causes like general health, ongoing medical conditions and medications in addition to COVID-19. Consulting the relevant specialist will help to clinch the diagnosis before administering treatment.