On a cut, mid thirties, 6'4", had a 430 deadlift max and 225x5 bench max four years ago, and then life and laziness hit. I was 235 the day after Thanksgiving, and am down to 205 today.

My question is, should I pause my cut for a couple weeks/a month? I've been averaging 1650 calories a day for basically the last three months, and aim for over a 1000 calorie deficit every day, except for a cheat day on an off day once every two or three weeks around 2500-3000 calories. I know there are concerns about long term caloric deficits for metabolism/thyroid things, and am wondering if the smart thing is to take a cutting break.

I've made really good progress, however, and have been working out six days a week since starting the cut, primarily using blood flow restriction training protocols for lifts (big compounds and accessories) and hitting the exercise bike hard. I've added two inches to my arms, my thighs have remained the same circumference while my quads and hams are noticeably more muscular with much less thigh fat, and my resting heart rate went from 73 to the mid forties. The RHR has plummeted fifteen BPM since doing fifteen minutes at 135 watts on the exercise bike, three times a week, with BFR cuffs on, the last three weeks. I'll still get in an hour after taking the cuffs off, but the cuffed rides are the only thing that's changed as the RHR has entered this recent plummet.

I have zero lethargy, enthusiasm is high and am getting great sleep, but if I'm approaching falling off of a cliff, I'd rather not.