This is something I do on a regular basis. I was trying to think why I do it because I have never been taught it but I guess it is just something I developed out in the field. To be specific I usually reward girls for doing little things for me (such as fetching something) by using lines like "Thank you luvvy" or "Bless, you're such a little cutie" or "awww that's great sweetie". I usually accompany these lines with a big, warm, almost cheesy smile, a slightly tilted head, and direct eye contact (it helps to have
this mindset to achieve this look). I will usually also pull them in for a 'sideways hug' - that is, where you wrap one arm around both their shoulders and pull them into you so you are side by side. This results with you smiling at them holding eye contact with their face very close to yours and your bodies touching. From there squeeze their body into yours and they usually then put their arm around your waist or sometimes on your butt (just to clarify, try to turn their shoulders and your body as you squeeze them in so you end up almost facing each-other with a lot of body contact, preferably with their boobs touching you and probably with your other arm on her waist or tummy, try not to just stand there side by side with one arm over her shoulders, that just ends up being awkward).
I think this works because it disarms them and gets them to bring down their barriers, in-fact pretty much 100% of the time, if you do this right (i.e. with confidence), a girl will melt into your arms and just stare back at you smiling in a child-like manner. This puts you in a dominant position and makes the girl feel safe and rewarded around you.
Just be careful with it because it can come across as very 'camp' (my personal
style is talkative with a bit of campness so it works well for me). If you want to try this technique then use it just to disarm girls and break the touch barrier fairly early in the interaction. Once she feels safe and that you are in control then you start to pile on the serious sexual tension.
Well that's what I have been doing and it's been working a charm. Not sure it counts as objectifying women as such but I was going off the advice the dating coach gave you as it tallies well with my experience.