First, good luck to you man. I had a friend in Primary who got sick a lot and she had a tough time there for a while. She ended up making it though and is now a -53 driver in California, so don't give up and don't DOR.
As for the above, I'm not an instructor those guys have plenty more experience teaching you how to fly, but I'll throw out my advice for what it's worth...
Your scan in the pattern is slow, but there are ways to speed it up. Be methodical, solve each problem, and move on. If it were me I would really focus on heading, altitude, and airspeed. If you can nail those three every time, the rest of the corrections will be smaller and easier. You have to pick something to get right at first and those three are pretty good starting points.
Personally, when I see a number on an instrument, I think about that number and then whether it's fast, slow, high, or low. 110 doesn't mean much to my brain, but the word slow means my left hand needs to do something. 1500' doesn't tell my brain anything, but high means my right hand needs to move forward.
I hope that makes sense. Try looking outside...in front and to your left and right. You'll find that at each runway there is a field or tree or house you are probably flying over each time in the pattern. Once you figure that out, you've pretty much got the heading thing solved.