Welcome to HCM.
Recurrent UTI needs series of tests like IVP and CT scan
to look for the cause.
If the cause is found, you need specific treatment.
Otherwise, long term antibiotics for 3 to 6 months will be helpful to prevent recurrence.
Also, things that would help are.
1. Plenty of oral fluids
2. Cranberry juice.
3. emptying the bladder at bed time