Adjustment of Status - I-485

hi! my pd is nov.12 and we received msc receipts dec 1. seems like almost everybody here had biometrics within the month. I'm getting bothered because 4 days from now, it'll be a month already and i haven't received any schedule yet.any thoughts on lee summit processing? also, will there be problem if my husband has not paid his taxes for 2 consecutive years which is less than 8k, since he's a truck driver and on 1099? pls give me your thoughts or experience on this.thank you so much.