Sounds a bit like your body adjusting to new eating habits, the shakiness is also seen in people with hypoglycemia before they eat. When I first tried IF I’d get shaky and irritable if I went 3+ hours without eating during the day, this was on a low carb diet. I added carbs back and rarely feel the shaky uneasy feeling anymore.
Maybe its your body adapting to the new eating schedule. You can always try to do IF some time, for like a week or two, and see how you feel. If it doesn’t go away, you can stop doing it and go back to your regular eating schedule.
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Also, you can start doing some other variation of IF like 12:12, and going up from there.