Luma's ears went up immediately but were kinda funky for a while from the tape. Rosie's were down when she came home and for the first week. I tried taping but got her hair stuck in the medical tape and I felt so bad...I decided ti let what happens, happen. She had one up one floppy for a good bit...now they're both up
What helped us was massaging the base of the ears "upwards"...I really think it helped!