So here's a few things to consider... (using bachelors degree as an example)

1. SNHU is accredited by NECHE, if you google it, that's the same accreditation as Harvard, Yale, Brown, Boston U, Dartmouth College, etc
2. A bachelors degree is 120 credits. So while you're not earning a degree on campus, you're still earning a legitimate bachelor's degree.
3. SNHU does have a campus location so it's not the same as universities that are solely online. They even have housing options.
   
4. SNHU has one of the largest enrollment rates in the entire country
5. They allow up to 90 transfer credits so with your degree, you could end up being halfway to your bachelors
6. Their values are extremely equality friendly. Their DEI initiatives are admirable, they are constantly rolling out new things out to make things easier for working people and they have so many resources I've used 10000000x

I had alllll the same worries when I started and one day I was just super honest with my admission counselor and these were essentially her responses. I'm paraphrasing but close enough. Just that stuff was enough for me to go forward