You need to share your thoughts and concerns with your husband. I’m sure you two can find a solution.
Have you discussed finances and this phase of AOS where your life is sort of hold? Has your husband addressed at all how you will buy essentials for yourself while he’s at work? Or does he expect you to not be in need of anything (that’s unrealistic- we all have needs and that’s normal)?
We also lived with my in laws when I came to the US on an K1 visa and was awaiting my adjustment of status. I did not feel bad eating the food because my husband contributed by paying rent and taking turns buying groceries for the whole house. Even if he didn’t, my mother in law would be very concerned if I didn’t eat anything.
Regarding finances and how we managed that, I was/am an authorized user on my husband credit cards from the start. I never abused that of course; just bought whatever I needed while he was away working like groceries, gas for my car, personal items, etc. Even before I came to the US and was waiting for my visa, I just finished my studies, it was Covid and I didn’t have a job. My husband supported me financially too and that’s normal; I would do the same if he was in need.
I didn’t feel bad because we both made the decision to pursue this immigration path and what it entailed and also we share everything and that includes money. If you still feel uncomfortable, think about it this way. I’m sure while he is at work, you take care of the household and perform household chores for you and your husband. That’s work too!
In any case, you should talk to your husband openly and share what you’re going through. I’m sure you two will a way forward that works for both of you.