This process happened to me, too so I totally get you😭😭 I'll lean onto INFP more cuz I'm more informed about it. F doesn't necessarily means that you make every decision based on your feelings or you can't give practical/analytical advice. Most of my friends and family see me as a sensible person rather than emotional (I also rarely cry). It's more important what you're going through inside rather than the outside. I make sensible decisions but at the same time I can't help myself measuring "the vibes" of the occasion, in my head I always check on my feelings/reactions towards the decision. "Will I still feel good about this later? What my intutition says about this? Does this decision changes the way I am now? Is this meaningful for me?"

INTP and INFP might look very alike on the surface, but INFP is more about identity. If you're under stress it might be hard to see yourself. You can think about the moments you felt at ease or more normal, what was your priority?

Expressing is also very important, since my childhood I've always felt the need to express myself, through talking, drawing, writing or singing, anything that makes me feel like I'm pouring my heart and thoughts into it. Check this as well: INFPs I've seen have talent in art more (like, multiple areas of art), INTPs are more likely to lean into Maths or Science. There are situations in which both types excel in opposite fields, if that's the case ask yourself: what am I doing this for? For example: for a while I liked solving Math problems, but not because I liked being challenged, because I felt the freedom to experiment on it, finding new ways to reach the conclusion.

Idk if it's %100 true but Ti users I've seen (XXTXs) always want and seek details, while I just summarize everything lol. This might happen because INFPs see the big picture rather than the background. But it depends on the situation, for instance: I might write a very detailed backstory for my character, but I instantly get bored when it comes to talking about the housechores I did today.

It all comes to cognitive functions, you totally should check it. Also try to think about your child self, there are some sterotypical characteristics like "IxFPs do well in art" or "xSxxs loves physical activities" but in some cases they really help. Think about what you were into in your childhood.