I barely get scheduled anymore at my job what gives?

I work at a retail grocer (Meijer) and I figured the holiday hour cuts would've been done and over with now. But I'm barely being scheduled anymore. I have fairly good availability (3-10 pm, Monday-Saturday. Sunday being the only day off.) I never no-show. I barely call out unless I'm sick and carrying pathogens because of it. I do my job pretty well. I'm on time, take my breaks, and don't cause any major scuffles.

But this week I had ONE day scheduled, which I worked (I had initially volunteered to work April fools and the day after but I ended up not going in today due to extreme period cramping. And tomorrow I won't be in due to mental health related medical care. This does not and will not effect my status of good employee behavior because I wasn't on the schedule.) Next week I work 2 days total at the end of the week. And the week after I'll be out of town during my birthday and the surrounding days and I'm worried they won't even bother to have me work.

I have nearly 3 years of seniority at my job. I might be a part-timer but you'd figure they'd give me SOME hours... Ever since the new manager showed up my hours have been getting severely messed up. Am I being soft fired??? If I am how do I fix that I cannot leave this job right now and getting a job elsewhere isn't easy.