Testosterone, despite being a controlled substance, is easier to buy online than people think. If you can afford to, you could seek out where to buy it and stockpile some. You'd likely be buying from websites targeted towards bodybuilders.
Depending on where you are, it might be illegal to buy or to possess, or it might only be illegal on the seller's end. Either way, you can look into whether this is something trans people are actually arrested for where you are, to assess risk.
In most countries, buying T for personal use still isn't something you should expect significant legal consequences for. You can mitigate risks even further by never giving your personal info, ordering to somewhere other than your home, and using crypto or other payment methods (but even without these safety measures, don't let anyone make you believe this is a high risk activity when it's not).
Many of us commit small crimes on a daily basis, from streaming films to minor theft, knowing the risk of punishment is so minimal that we barely think about it. I need people to pick up a bit of that energy for DIY HRT, instead of being convinced it's impossible to access. This includes testosterone.
People who want to keep you from taking T are invested in making you believe you already can't access it, without doing the legwork to actually shut these vendors down yet. To convince you that you've already lost. If you're in a situation where you think access might be cut off soon, stockpiling is a possibility.
