Kidney transplant, family member not drinking enough and getting recurrent UTIs

My family member got a kidney transplant several years ago, but has always struggled to drink enough, maybe in part due to swallowing issues after her surgery. She’s probably at half to 1/3 of what she needs. Yelling at her to drink more does not seem to be working.

Has anyone’s doctor ever prescribed IV fluids on a weekly basis in this kind of scenario, or even a feeding tube that would let her at least get hydration?