It can be a bit like climbing a mountain, sometimes you gotta stay at a certain height for a while to let your body acclimatise and get used to your new lifestyle.
Without a strict exercise routine it can get harder/slower the closer you get to that goal. I’d say don’t beat yourself up, make maintenance the goal for a bit while making little changes until you’re ready to push on.
I barely use Amazon, it’s just 90% AliExpress stock at huge markup anyway, plus more importantly they’re evil. I do seem to have prime though, which I use to order something maybe every other month when it’s urgent for work. Thing is I’m not signed up for prime, it just activated when I linked an audible account to my business account years ago. I do use audible, to the limit of the credits anyway. So I’ve been kinda torn for ages and can’t bring myself to cancel as my old audible subscription seems to be giving me prime somehow for much less than prime is to sign up.
I just convince myself I’m playing the system…