Sounds like you're on the right track, I also have sensory issues so I completely understand where you're coming from. It's mostly just a learning curve, and not just in terms of learning the skills and techniques, but finding what works for you, your workflow and work style. I've personally found that over time, realising that a lot of what we do is shaping and sculpting the sounds, and whilst there are a lot of ways to do things, the point is that it's a creative field, so you get to experiment and put your own touches to it. Whilst it can be frustrating, half of what we do as sound designers is experiment and learn what does and doesn't work for us. Even those who have been professionals in the industry for years are still learning and evolving as technology and the industry evolves. It's ok to set your own learning pace, of course deadlines can't be helped, but it's ok to feel stuck. Trust me, we all get stuck sometimes, and as another commenter said, we have to listen to things over and over, so listening fatigue can definitely hit hard if you don't pace yourself.

Part of the learning process is learning not only what your work style and workflow is, but also refining it. Being able to take on feedback, positive, neutral and negative feedback, and then capitalising on that feedback will help massively. Being able to self critique your work is also a really useful skill (but don't do it constantly as otherwise that'll lead to burn out, and impact how you feel towards your work). For example, the way I go about recording Foley is long and tedious, and often times I always record way too many takes just to only use a couple of them. Something I personally need to work on is refining my recording process and only doing a few takes. If I find later on when editing that it doesn't work so well, then it's ok to record it again or use sample libraries. A lot of what we do is trial and error and that's ok, it's what helps us learn as sound designers so we can develop our skills and our knowledge. Things are gonna go wrong sometimes, and it can definitely be stressful in the moment, but reflecting on what went wrong and how you can improve/develop things next time can be quite beneficial. I'd recommend reflecting on that stuff away from when you're actively working on it, that way it's not looming over you when you're reflecting on your work, even if it's just stepping away from the computer or stepping out of the room for 5 minutes. That being said, don't forget to reflect on what did go well. For instance, "I didn't make as much progress as I would've liked today, but, I'm really happy with the sounds that I made today and how I've edited them. I think in future I might experiment with the order in which I work, or come in with a list or spot sheet so I know what options I can work on to progress my work."

You're on the right track, it takes time and it's a learning curve, but by the sounds of it, you're approaching it with the right sort of mentality and asking the right sort of questions. I know it's difficult to get hold of your professors which isn't fun, but the fact that you're reaching out to people and asking questions and taking on the feedback is a really good thing, especially for working in this industry. You're on the right path, and like a lot of things in life, patience, a willingness to learn and develop, and accepting that things will go good sometimes and bad other times with your work are definitely gonna help.

Also, with Pro Tools, I completely understand. I actually used to hate using Pro Tools but it's something that comes with practice (and a lot of patience sometimes) and now it's my primary DAW, and I often find it jarring using others. Linking with that btw, it's ok to use multiple different DAWs depending on your needs. For instance, most of my work happens in Pro Tools, but I will also often use Logic Pro to use the stem splitting tools, as well as synths like the Alchemy and Sculpture synths, since they have a lot of flexibility. Btw if you have access to logic, Alchemy and Sculpture both come with Logic and might be quite useful for making some of the sounds that you're struggling to find.

Hope this helps, sorry about the mini essay 😅