Side lying position

Hello ebf mommies! Is it safe po ba to do side lying position in my 15 days old baby.. i do it kasi especially kapag antok n ko, nkakatulog nman kami parehas ni baby.. if safe dapat ba nakaunan ung arms ko o nakaflat lang head nya.. i put pillow sa likod ni baby and tummy to tummy nman kmi.. thanks#theasianparentph