Universal credit

Hi, is it possible someone can give me some advice please. I am currently claiming universal credit and pip. My doctor has advised UC that I am only fit to work max 10 hours a week and 2 hours a day as I suffer from severe copd and get very breathless and fatigued. I caught covid from my work coach when I was called into their offices which has now resulted in my being diagnosed with long covid. I am trying to still work, I work from home doing reiki and reflexology and am declaring my earnings, which are deducted from my universal credit payments. I have since been advised that I may qualify to be able to earn more money before being deducted the 45% or be entitled to more money as I have limited work capability. My work coach said someone would phone me approx 2 months ago from their disability department, but to date I have heard nothing. My doctor is happy to sign me off work due to having copd and now long covid, but I don’t know what I am possibly entitled to or what to claim for. Any advice would be welcome. I am 60 this month and have worked all my life, so up to the pandemic I was never in receipt of universal credit and this is all new to me. Thank you