First, I would manually log those lifting workouts in Fitbit to get a better estimate of TDEE. That's going to be your best tool there.
Though the spreadsheet may suggest a height change to make it a better tool.

The HIIT (if like real HIIT running) would actually be handled just fine with step based calorie burn by Fitbit. HR based burn would be inflated though if using one of those devices.

Yoga must also be manually logged, you'll likely have no steps for minutes on end, but obviously burning more calories than sleeping it gives you.

But that may allow Fitbit to get up to the estimate of the others, and your calculated based on weight loss trumps them all, and you were indeed eating enough for that to be valid results.

Not sure if you saw it, but on the Progress tab, far right, is a place to do what you did but monthly, daily eating amounts, average daily, weight loss, and calculated TDEE.

I'd keep that up each month with new measurements.

And 15% off that TDEE figure is what this group recommends. So 2200 x 0.85 = 1870 now.
Weigh less, get to eat more.

100 less daily is rather a big amount for only 1870 on the actual days the workouts are being done. Because that extra 500 on the weekend with no workouts would likely push some time period beyond your deficit, meaning it would literally be surplus calories at that point.
If it was only 250 more on each day, maybe not so bad. But the extra deficit each day during the week is probably worse than.
Might see what the Fitbit says normal weekend calorie burn is.

Why not just plan the eating in the day better, smaller breakfast and lunch if dinner will be out?

Or do a totally extra workout not included in TDEE estimate of activity so you have eat back calories. Like Sat has nothing planned or normally done, so the TDEE estimate doesn't include it. Do a 500 cal workout though, less same 15%, and there's some extra eat back calories.

Unless you want your macro and calorie goals changing on you - you'll have to unsync accounts, and just keep an eye that the Fitbit TDEE is staying about the same in your weekly reports.

Those kids are keeping you active. Shows why an hour of exercise doesn't replace a day on the farm being active.

I'll bet you get nothing from the increase. Mere 100 more.
Even if your body didn't speed up and the prior 1770 was maintenance level - it would take 35 days to slowly add on 1 whole pound.

Anything faster or more is water weight, proving out prior eating level could not have been maintenance. Because you just topped off carb stores with attached water in the muscles.

Workouts will probably get stronger, or at least attempt to when appropriate.

That macro combo is like failsafe way of confirming enough protein, even if overkill.

Yes, you would have lost that amount if you had eaten that daily.
That's what the 420 daily average deficit means.

Now, in reality, you probably had a suppressed maintenance for some of that time, and those big days wasn't eating up to maintenance, but rather over, so adding fat.

But the calculated TDEE still takes that in to account over that long time span, so that's still valid calculation.

You are starting to confuse yourself though, you did the math right.

It's exactly the same way as someone that eats 1200 and loses 20 lbs in 8 weeks, but then plateaus for 12 weeks and is still stuck.
If they had eaten 20 lbs x 3500 / 20 weeks / 7 days = 500 cal deficit daily that entire time - they would have almost certainly lost the entire time and still be going instead of stuck. And eating more, and exercise probably having a better effect, and not so stressed about it, ect.

Just remember, your weight loss shows you were burning upwards of 2200, during cold winter months. Or was it winter for you?

I'd say your Fitbit numbers, your average intake, and your weightloss are pretty much in agreement.

Here's a little math:

2193-1795 = daily average deficit of 398

weightloss over 17 days (going on the 3/31 to 4/17 numbers) = 1.6 lbs

1.6 divided by 17 times 3,500 (1 lb fat loss rate) = 329 calorie actual deficit

That's only difference of 70 calories between estimated and actual weight loss (which, seriously, chalk that up to "normal fluctuations/errors")

I'd stay stick with the plan. It's working as it should.

Those reflections better start making you smile too!

If eating enough, always do the math.

And see how the measurements look next valid day, don't wait a month.
Can't see all around you. Well, unless you have a 360 mirror, but that sounds scary for anybody.