It sounds as if you are on the right track, congratulations!
What I eat in the evenings often depends on my BGL and on habit. I can understand that you don’t want to take any more needle sticks than necessary; I know that in the year before I started pumping I recorded 1<488 injections and after 60 years using insulin that means lots of ouch.
I like vegetables so when wanting to eat without additional insulin I go for raw veggies; especially when I’m at a pre-meal social activity with a buffet. Particularly “healthy” are things like raw broccoli, carrots [but not too many of these] cherry tomatoes, etc. Celery sticks can be filling especially if stringy, and have absolutely zero carbs unless you eat a tremendous amount.