After Dinner Spikes

Hi all, I have some questions for you as theyve begun to panic me.

Just a little background: I was diagnosed with T1 back in 2017 at age 19. I was due for a 3 month checkup this month, but with COVID-19, it was ultimately cancelled and I haven't been able to get an appointment until JUNE. And who knows how that will be then, since I live in the US. I am quite a paranoid person and tend to worry about so much, so not seeing my doctor has panicked me foe a couple things.

I have been having some sugar spikes recently which has left be quite depressed and just not motivated at all with this. I have regular stomach aches, so these sugar spikes left me with a bit of panic and of course led me to the WEBMD for Gastroparesis. A lot of the symptoms I don't necessarily have, but it is worrying me.

The other night I had dinner at 8PM, and my blood sugar was okay, and then at 1AM my sugar spiked to 300. I hadnt eaten anything for so long, so WHAT was the issue? This of course panicked me for the dreaded gastroparesis. Is it possible to develop this in 4 years? (Sincerely hope its not possible)

I decided to try and experiment, and yesterday only ate a small sandwich with a certain amount of carbs, as my only meal. My BS was stable for most of the day thankfully until midnight where it got low so I ate a late night snack to adjust, when it spiked again (which may have been due to carlessness of the time, but I was so hungry from only eating one sandwich all day that I couldnt handle it)

Today I had dinner and covered for the whole meal. After my meal I noticed the two arrows going up for my auto mode telling me my blood sugar was going up quickly. It ended up going up to 250. Why did it go up so much if I have covered the meal and waited the 15 minutes? It was a pretty carb heavy meal, but I thought it would be okay since I carb counted the whole meal. My pump is now showing the two arrows going down and my blood sugar is getting better. But why am I having these random spikes?

I had a mental breakdown the other day because I just am so mad at myself for not getting this right. I want to do what I can, but it's so discoursging whenever you think you do everything right, yet your sugars still end up messed up. I practically have a breakdown every time I see my doctor.

I don't know what I'm doing wrong, and if it turns out that I have caused myself to have Gastroparesis because of poorly managing my sugars, I am going to be devastated. Does anyone have any advice?

Are my spikes because of the food I eat? Should I wait till all of the insulin is injected and THEN start my 15 minute countdown? I don't know what to do right now and am at a loss since I can't see my doctor.

Any tips would be appreciated. I may have had this disease for 4 years but I feel so ashamed with how inexperienced I still am with this. I'm 22 but probably come off as quite immature with how much I am struggling so I apologize with that. I would just like some tips on how to better handle these spikes and if I am doing anything wrong.... thank you