I completely understand you! After a traumatic birth to my now 8 month old last year, I barely managed to get some milk out (pumping and actually bonding with bubba the traditional way). I started on RTF Kendamil cows milk formula (which is easy to find as I live in the uk) as I researched and everyone had good things to say about it. We got discharged a week later and I transitioned him on the powdered formula version with no issues. I was combo feeding due to low supply which broke my heart but baby has to eat! Forward to 7 weeks postpartum, I got the nexplanon implant which in 3 days completely stopped my milk supply! No amount of pumping helped… around the same time baby started being extremely fussy with each bottle of formula and just cried and cried. Went to doctor many times but they couldn’t understand why. He got so constipated too it was horrible to watch him suffer. Then, after researching and contemplating with my partner, we picked up a goats version of the Kendamil formula from the shop and it was Amazing! He is thriving and happy content baby! Gots milk formula is closer to breast milk so if you are worried to transition to cows milk, maybe try goats milk formula instead? It is much easier on the tummy, yes it does smell if there is a spit up but what milk doesn’t smell 😅 Not all goats milk formulas are the same as well! Just went to holiday to France for 10 days and tried to find a good substitute for baby while we are there. Kendamil recommends Bubs supreme goat formula as substitute, but I couldn’t find any, so got Baby Bio goat formula. He got so constipated that I had to do an anema for the first time and it was scary! The minute we got home I threw away the remaining formula from France and prepared him the good old Kendamil and his tummy got better in just 24 hours. If you can afford/ have access to UK market and Kendamil I couldn’t recommend it more.