Is it Possible to Ask for Higher Dosages of Injections for Keloids?

I have keloids on my chest, back and face. I started treatment 2 months ago and have had two sessions of injections. My chest keloids have flatten but not my face keloids. I was wondering if i should ask my Dr. for a higher dosage (like the one used on my chest) she said she uses a different one on my face so they dont sink in, i just wanna hear some opinions. i dont know what the injections are of but i knwo the chest dosage is .2 mg i think. Thank you.

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