There are long-acting (e.g. 8 weeks) injectable versions that are outperforming[1] the daily pill so that approach shows some promise. Not that anybody enjoys injections…
[1] https://www.hiv.gov/blog/long-acting-injectable-form-hiv-pre...
[1] https://www.hiv.gov/blog/long-acting-injectable-form-hiv-pre...