What am I doing wrong

I was at 0.5mg 2x per week but was experiencing rapid HR which was kind of uncomfortable so I cut back to 0.25mg 2 x per week and I legit haven’t lost anything, maybe 1-2 lbs of inflammation. I’ve been on it since May 16th and I’m like wth lol I know my dose is super low but I would’ve thought I’d see some more significant changes. Maybe my Reta is bad? Change injection site? I’m open to trying 0.5mg again but idt my body can handle any more than that since I was experiencing those symptoms at such a low dose.. TIA!