recommend...they didn't do it...Pfizer did, with its 'Paxlovid' product...results so obviously outstanding, the FDA halted trials in order to get the drug released asap.
btw, if you dig deeper into this issue, HCQ+ never had a chance of being effective given that the SARS-CoV-2 virus uses not just ACE2 receptors on human cells...which HCQ can inhibit...but also the FMPRSS2 transmembrane proteins...which HCQ doesn't touch. Paxlovid on the other hand does and it has an added drug that slows metabolism of it, thus making it effective longer. The initial HCQ studies were "in vitro" (i.e. in petri dishes) with Kidney tissues that don't have TMPRSS2 enzymes...like LUNG tissues do...BIG difference, as you can probably surmise...btw, there are videos available through Youtube by microbiologists who explain the phenomenon in layman (Me) teams.
Bottom Line...Trust the Professionals who do this work for the sole purpose of keeping you healthy and alive.