I had issue of urine leakage like 1-2 drops after istanja(proper urination). I face problem whenever I am not present at home to change my underwear. I also offer prayers

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Please keep diaper or something which will restrict urine to transfer to undergarment and cloth. Before wudhu remove it and do taharat before wudhu and prayer.Those prayers without taharat and changing of underwear batil.
Praying to Allah for shifa