I had the same thing a long time ago when starting doing Atkins - I I found that I went very wobbly trying to run up stairs. Back then I just added a little more of the low carb foods - after diagnosis I went very low carb and found I needed a few grapes to stop the sensations of going hypo, until my brain accepted that the days of high blood glucose were past.
You might experiment with both - particularly if you have a BG meter so you can see how things are changing.
Adding in a bit more salt or taking a multi vitamin and mineral tablet could help with the transition too - a lot of electrolytes are lost early on, along with water, which causes the blurry vision - that also passes once things are more normal.