Hello mama! Honestly, maraming moms sa circle ko na nag-switch from Enfamil to S26 and ang babies nila did well, pero it really depends sa baby mo talaga, some adjust agad, some need a week or two ng gradual mixing para hindi upset ang tummy. I'd suggest doing it slowly, like mixing 1/4 S26 with 3/4 Enfamil for a few days, then increase the ratio gradually so baby's digestive system gets used to it. Keep an eye on poop consistency and if baby develops rashes or seems uncomfortable, you might want to consult your pedia muna bago mag-full switch. Good luck, hoping baby takes to it!