Immunity is not a binary condition. It's not as if immunity, whether produced by vaccination or recovery from infection, lasts a certain period and then stops. While I would encourage everyone eligible to protect themselves by getting vaccinated, all the scientific evidence we have from similar viruses indicates that recovery from infection produces a significant level of cellular immunity lasting as long as the patient's immune system remains basically healthy. Concerns about waning immunity were mainly based on antibody levels, but of course those aren't very important.

https://peterattiamd.com/covid-part2/

It may be short term, but it's probably as long or longer than the immunity from the vaccine.

That's an argument for scheduling repeat vaccinations... but it needs to be looked at in the context of a lifetime. A recurring shot every year or few years may be feasible. Every three months is not.

well the amazing vaccine at best works for 4 months, if that. considering i've recently had covid with minimal issue, i'll take my chances with natural immunity.