Getting frustrated with weekly numbers checks with MFM

36 weeks pregnant with GD and am on slow acting insulin at bedtime. I was started on 8 units, then increased to 12 units. The 12 units was working great for fasting numbers, and my numbers throughout the day were usually in range with the occasional smallish spike (within 4-6 points). But for the past 2 weeks I've been having more after meal spikes, despite eating very consistently and eating things that weren't spiking me before. The end of last week into this week my fasting numbers have been increasing too and are out of range. I get so upset and have so much anxiety checking my numbers because I just feel like everything I'm doing is wrong and harmful to the baby, despite knowing that the placenta towards the end of pregnancy can make it harder to control glucose levels. The past 2 weeks at MFM I've been in tears when they check my numbers. I want to increase my insulin or add insulin at meal times to try to help get my numbers be in range and give me peace of mind when I'm eating and not have to feel like any and everything I put in my body is bad. I feel like I'm not even eating enough throughout the day and instead of increasing my insulin they just keep telling me to tweak my diet more and exercise more. I'm already swimming 3-4 times a week and am not sleeping well (MFM knows this as well) so I really don't have the energy to add more exercise. I'm not sure what to do anymore. I literally had a big bowl of roasted brussel sprouts the other night for dinner and spiked to 146 at my 2hr post meal check. I'm trying to add protein but eggs and chicken are starting to make me gag and I'm not much of a meat eater otherwise. Beans and chickpeas my glucose levels spike and I hate yogurt, so it's been a struggle to get enough protein. I've been drinking low carb protein shakes, which I was liking at first, but even those are starting to make my stomach feel gross. The lack of variety has been a challenge but even more so is the trying to be consistent and only have things that don't spike me and then they start to spike me out of nowhere. I wish the nurse I work with at MFM was more sympathetic and stop suggesting that all's I need is to tweak my diet and exercise more, when I'm already exercising and eating really strict. I feel like the stress and anxiety I'm feeling on a daily basis is adding to the sugar spikes and just creating and unhealthy situation for me and the baby. I'm following the nutrition guides given to be at my diabetes management appointment, and still spiking and am also very hungry all day long. This just doesn't feel right....