@bernadene24 There is no need to rinse your equipment in boiled water before your sterilize. Just tap or Lifestraw water is fine - sterilizing takes care of any germs.

Also, the goal is to eliminate any NTM or biofilm on your equipment - It will not be truly sterile because our homes are not. Do not worry about being totally dedicated to making things sterile - just clean.
When you walk around in this world you are constantly exposed to organisms and your body takes care of most of them. The goal is to keep the truly nasty stuff out of your lungs. As @pacathy said, we need to take sensible steps and live our lives.

Keep in mind that with all "bugs" risk is a combination of time and density of exposure. So random particles in a roomful of air are low risk, whereas showering in a roomful of steam with a lot of NTM's in it is higher risk.
In 8 years of living with Bronchiectasis and asthma, I have camped and traveled with my equipment, soaking in hot soapy water, rinsing with filtered or spring water and boiling in distilled water, drying on a clean paper towel covered by another and storing in a zip log bag. I change the baggie every week or so to prevent accidental contamination. And I have been off antibiotics for 70 months and tested free of NTM and Pseudomonas again last month.

The longer I live with this, the more I feel simpler is better.
Also, I focus on good diet, sleep and aerobic exercise to help stay healthy.