Anyone had baby with CMPA but good weight gain?

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My 3.5 month old is a generally unsettled, colicky baby. We were hoping things would improve after 12 weeks but they haven’t.

I wondered about CMPA but because weight gain has been really good and no blood in poo, GP basically advised to wait it out when I raised at 8 week check.

Symptoms: constant congestion, mucus in nappies (no blood), reflux, lots of smelly farts, lots of whinging/crying by the evenings.

But doesn’t have rash.

Baby is mostly BF, 1 bottle of formula per day.

My daughter was nicely following the 9th-15th percentile and I was told as she was gaining well she didn't have allergies she was just a 9th percentile baby.
I reduced diary and she moved to the 25th and when I removed it she went to the 35th she is nearly 4 now with 20 food allergies and bounces between the 25th and 35th percentiles
She was 17 weeks at diagnosis she also has severe silent reflux which is in addition to her allergies and still needs medicating at nearly 4