All collagen shots best avoided if you have gyno?

[Dgc12]

Diagnosed with benign gynaecomastia 2 and a half years ago and have seen some slight growth over the years but not to the state that it is noticeable by others

Ever since diagnosis I have removed all forms of food that contain nitrogen and do daily exercise on the chest muscles (chest press with 25 kg resistant bands)
My diet is strictly chicken/vegetables/fruits with no gluten, dairy, sugar, soy

but due to my weight loss/loss of appetite due to my multiple sclerosis, my dietician has prescribed me with:
Nutricia Calogen Extra Shots Neutral 6 x 40ml

to take one of them a day after lunch and dinner in order to  Increase  my calorie consumption content

But after googling it, it seems Collagen  contain oestrogen and make gyno worse, so just wanted other expert opinions on whether I should consider this medication/supplement as if it will make my gyno worse I'd rather stay underweight

https://www.expresschemist.co.uk/nutricia-calogen-extra-shots-neutral-6x40ml.html?gad_source=1&gbraid=0AAAAADtXBiq-Wbxj6Cj1M-opuchdDq35u&gclid=CjwKCAiAjeW6BhBAEiwAdKltMlBUZIvktrkShzYMZ_Sg5BVVz4CUgno