Considering switching to ff already

With my 1st I had supply issues and ended up triple feeding for 6 months (bf, pump, supplement) and taking every vitamin known to man to try to get my supply up. It never fully worked and it made me crazy. Now I have a newborn and an 18mo and my newborn spent her first 2 nights in the NICU, which I feel like has set me up for bf problems again. I refuse to do the triple feed thing again and I simply don't have the time with a toddler at home. But I'm also really tired of stressing about my supply (already) and everything that goes along with trying to EBF. I'm seriously considering throwing in the towel and switching to full formula. The only thing really stopping me is that I'm afraid my newborn will develop gas and digestive issues.

Are digestive issues and gas guaranteed with formula?