My swimming is improving (I did write going forwards...) in style if not in endurance or speed. At least my current coach has told me that I'm starting to look like a swimmer! In fairness I do generally feel more in tune with the water and frequently notice that I'm going through a checklist of at least arm entry site and angle, front-quadrant timing, pelvis tilt, ankle position, hip rotation as I'm swimming. Previously I was often thinking about just keeping going.
I'm still struggling with kick drill lengths and finding them exceptionally tiring.
Last week I was re-introduced to tumble turns, starting with a basic tumble away form all walls. It took me few attempts to realise that being in a tight ball is pretty critical. The rotation made me feel dizzy. After 4 or 5 successful tumbles I moved towards the wall to start to learn the push-off phase. I had to stop though as I felt nauseous. That lasted almost 48 hours. Since I've tested one tumble per swim to try to become accustomed to it. The thought of a tumble, actually half a rotation, every length makes me feel sick. A quick online search revealed that nausea is common for newcomers to tumble turns, so at least not unusual even if unpleasant.