I started a VERY slow whole milk transition 3 wks ago since my BM supply is dwindling and I planned to stopped pumping around DS's first birthday (but possibly continue the a.m. and p.m. nursing sessions).
Week one I replaced 1oz. of BM per bottle with whole milk. So he normally gets 24 oz of pumped milk when I'm at work - that week he got 20oz.

Then 2 oz the second week

Then this past week 3 oz (which is 50% of the bottle).

He has been having terrible poop issues - -explosive to the point where he's ruining clothing, needing an immediate bath, getting a rash, etc.

He also seems to be teething pretty bad (last night he went to put a toy in his mouth and screamed b/c it must have hurt his sore gums).

So, I have no idea what's what.

Should I try soy this coming week and see if it makes a difference? Is it possible he's just having a harder time adjusting and if so, is it better for me to continue like this so he is getting used to the milk?

Any thoughts? TIA