I think this is an issue that many people face early in their transition. It is very common, and we see this issue brought up here repeatedly. That doesn't mean it is wrong. It is a very real concern.
The problem with "passing" is that, by definition, it relies on others' opinions. We have this image in our minds of what certain types of people look like, and that becomes a standard we try to meet to fit in. But everyone has a different opinion of what that looks like.
For example, look at the attached photo. Can you tell with any certainty which of these people is:
Catholic? or Mormon?
Born in Germany or Spain?
Is a wanted criminal?
Works as an electrician?
Cuts their own hair?
Is a pathological liar?
The fact is that we cannot tell with any certainty which of these is true without knowing more about them.
So why is being transgender any different? Even if someone knows, or suspects, you are transgender, maybe you are not MtF but FtM instead? Maybe you are intersex or have PCOS.
Appearance alone is fallible. When we set unrealistic goals for ourselves, we set ourselves up for failure and disappointment.
And the reality is, why does it matter? It is not possible to appease everyone and satisfy everyone's ideal image of what YOU should look like.
However, when you just be yourself, let your personality be what it is, people begin to see that you are a good person, and it doesn't matter what clothes you wear or whether you wear makeup.
Those who have transitioned long before us do not focus on "passing". Is it because they have achieved all of their goals? Partially, yes. But they have moved on from worrying about how they look and act to just being themselves. They have accepted who they are and are comfortable just living their lives as themselves.
My advice is, and always has been, not to worry about what others think. No matter what their opinion is, it is probably wrong if they don't know you. Just be yourself and work on what makes you happy. Do not measure yourself according to standards set by society hundreds of years ago. Measure yourself according to yourself. Have you improved from where you were? Do you look better? Have your behaviors improved from where you started? These are the questions that matter.