It doesn’t sound like you’re doing anything wrong, it’s just super tough to have a caregiving job and then go home and do the same thing - you’re never really “off duty”. Day care has a high burn out rate. Before I even had a child I would come home a lot of nights from working child care and just go straight to bed. I didn’t want to hear anyone say my name or touch me by the end of the day. It might be worth looking into a part time job or something else entirely that doesn’t revolve around care taking so that you aren’t being completely run down before you even get home. I’m wishing you all the best and hope you find something that works in your favor.