My DSN came back from a conference/training and said the latest method to avoid those ridiculous pregnancy post meal highs instead of injecting for a later snack early like several of the ladies on here have tried (which they don't recommend) is to "Super Bolus" (sorry for pumpers only). So you do your normal ratio for breakfast (or the meal that's giving you the rise) and add on a couple units. Then over the next two hours set up a temporary basal rate that will remove half of those extra units from your basal profile. It does require quite a bit of maths but is doable. So, say you're Bolusing 5units for a bowl of cereal and your basal rate is 1unit per hour at that time, add on an extra 2units with the Bolus - 7units in total, then take 1unit (half of the extra) off the next two hours of basal by going on a 50% temporary basal rate of 0.5 for two hours. Obviously it gets confusing when your basal changes hourly and is something 'less rounded' like 0.64 but if you're good with maths its achievable. Unfortunately no suggestion for a formula/ratio for choosing how much extra to do, just trial and error. I've not tested it yet, something for Monday as my weekends are always different.
Hope that helps someone!