I'm also doing the 16/8 IF schedule, but I honestly don't feel like I am able to enter ketosis. However, I do have better sleep and I would say more energy. It also helps me to limit "junk" intake.
But doing regular Huel Black sizes (2-3 Scoops) 2x/day and I'll easily be within keto, sometimes it's too little energy though so I combine it with 2 eggs (organic).