Depth Issue: Sex after SRS

Hey everyone! I have a question that is really bugging me and i hope that some of you guys can help me out here: With a depth of 10cm (3.94inch) is it possible to make the hips meet when having sex with an "average" length or longer penis (avg. here about 13cm/5.12inch)? My concern is, e.g. in cowgirl position i wont be able to sit down entirely, or in doggy i couldn't really get "pounded" (lol), because the penis would reach my "inner maximum" before the hips meet, which would be awful (at least in my head rn). Any insights you could share with me here? Would be very much appreciated! (i am 4 weeks post OP now btw. and my surgeon said he didn't want to go deeper, because he didn't want to risk damaging nerves. i am trying to get more depth by dilating, but it doesn't really work as i hoped ...)