Thank-you all for your comments. I thought when I got the pump and tweaked the settings it would be ok and not fluctuate as much. I will keep tweaking the basal as and when I need to. Hopefully all will improve.
I don't comfort eat but it is annoying when I have to give extra insulin for even a cheeky biscuit.
But, you're type 1 diabetic. If you want to control you blood sugar, when you eat you need to bolus for it. Only those who are either honeymooning (still producing some of their own insulin) or in the meddle of some physical activity could get away with eating a cheeky biscuit with no bolus and no impact on their blood sugar. That not an indication anything is going wrong with you pump, that's just what type 1 is, unfortunately.
You might want to have a look at "sugar surfing" (it's mostly about how to manage diabetes via CGM) to get an idea that type 1 diabetes is not static - it's not about finding the numbers and coasting along with those numbers with no change. You're a living breathing person, you change, your stress levels, your activity, your health, I'm assuming your a menstuating woman so your hormone levels also change - all of these changes are going to have an impact on your basal requirements and what I:C works for you. If you can have a more flexible approach to your diabetes and just go with the flow, making changes to your pump settings as and when your changing body needs them you might be able to be more relaxed.
Are you confident changing pump settings youself? Pumping insulin is a great guide on this and well worth a read.