Help please! Drs can’t agree if it’s CMPA!

Hi ladies, my LB is 15 weeks old. He’s exclusively breastfed. From about 4 weeks old, his poops started changing and have since been very inconsistent. Sometimes it’s runny yellow with a slightly green tinge, other times it’s thicker like paint and brown, and most recently, it’s yellow with bits of undigested milk. He used to poop every other day but has recently been going a few times each day. He has no other symptoms but going off his poops, we’ve spoken to three GPs - one thinks it’s CMPA, one doesn’t think it’s CMPA and the third is on the fence. Really unhelpful! I’ve done the diary elimination diet for 6 weeks and his poops still vary so much. In the last two days, he’s been pooping 3-4 times a day producing poops like the one in the photo. Does this look like a CMPA poop to you? It’s yellow, pretty runny and has bits of undigested milk or is this just a normal breastfed baby poop? Any advice or insight would be incredibly helpful! Thanks in advance!