If the only person who sees your progress is you, then thats just as valid as anyone else noticing it.
You’re a person and if you’re fighting every day against something like art block, depression or anything else, and no one notices but you? Good job!! You’re doing great and should feel proud of yourself, because you are the one whose fighting this, and everyone goes at a different pace.
Things will ease soon, and your progress will be out on display in time, keep going!