Would you supplement?

SweetSyren

I am going on vacation next week and ds is 10m old. I pump before work and then 3x at work. DS takes a 4oz bottle with breakfast then 15oz total at the sitter (sometimes less if he is not thst hungry). I nurse in the evening and weekends. My problem is that my supply has been decreasing. I only get 10oz total on a good day during my 3 work pumps. So since DS takes 15oz at the sitter and I am not pumping that much during the day, should I give him a bottle or 2 of formula on vacation?