I find pizza challenging but I have a routine that keeps me in the 5-8 range. To do this I, unfortunately, need 3 or 4 bolus shots....
40% up front;
30% after 1 hour;
30% units after 2.5 hours.
Sometimes I need another 2 units at the 4ish hour mark as I find pizza digests really slowly due to the high fat content and I suffer badly from delayed spikes. That's why I try to eat it as early as possible in the evening, otherwise I can go to bed on target at 5ish mmol but then end up spending the whole night in the teens without realising until I read my Libre the next morning.
I think that's the high fat/ high carb combo, it comes back to haunt you later. We went out for fish and chips a couple of nights ago, first high carb meal in 10 months. We got cocky and thought we'd nailed it, she went to bed at 7.1mmol. Half past midnight and the dexcom was alarming 17 mmol double arrow up!!! Terrifying, we haven't seen those sorts of numbers since dx! We'll not do that again, we were literally up all night giving corrections
I think the fat slows the absorption of the carbs in those sorts of meals.
Yes, happened to me last night actually. Indulged after work with friends and had a milkshake (bad idea), burger and fries. Happily went to bed at midnight at 6mmol with downward arrow on my Libre. Woke at 2am at 12mmol and upwards arrow; spent the whole night waking every couple of hours to correct.
It's notoriously hard to nail it when you have high-fat meals like this; the easiest way I find to manage it is:
(a) eat your meal as early as possible so you can try and nip the spikes in the bud before sleeping; and
(b) try to do some moderate exercise after eating as this can help speed up digestion and reduce the spikes; even a 20 minute walk can be hugely helpful for me to maintain the 5-8mmol range the whole time with no big delayed rises; and
(c) obviously not for kids(!) but I tend to find even just one glass of wine can help stop delayed postprandial rises. Experiment with caution, though.