When will they start letting seasonal go?

I started the middle of November, have been keeping slightly above average rate, no write-ups, and I only have a written warning for being a little late back from one of my 15 minute breaks. Mostly keep to myself and sometimes connect with leadership and aps. I asked my AM about this and he told me not to worry about it and just keep doing what I’m doing. Im hoping to keep this job for a bit but I know it’s unlikely being seasonal.

My schedule is made till February 11th but I don’t think that means anything. I quit my fast food job to work here cause I couldn’t balance both jobs and college. So I don’t have anything lined up after amazon as of right now. So when do they start letting us go? Should I start looking for a new job now?