Advice on changing relationship structure from ENM

My partner and I have been together for 1.5years and always ethically non monogamous. We both enjoy and agreed to this as we value freedom and don’t want to limit each others joy or life experiences. We mainly play with others pending on circumstance and pre discuss and agree on what we are comfortable with.

Recently we have been struggling sexually I want more intimate and lusty sex but my partner struggles to feel and express desire to the level that makes me feel turned on. We have discussed this at length but the pressure of me having needs that they struggle to meet has made our sex life a bit stale and more difficult as we both feel awkward and stressed to please the other.

I love our relationship and would like to open up further to see if it takes some of the pressure off each other to fully meet each others sexual needs but want to hear how others have made this transition and if it helped your sex life with your primary partner?