Accidentally skipped marchs flea dose on dog

Dog has since been back on flea meds a whole month just received second dose since accidental skip. Noticed one flea on him about 3 weeks ago. Tried using the natural flea spray my mom had in the house but it didn’t do anything.

I bought petarmor carpet and furniture spay as well as petarmor carpet powder. Have been using those every other day for the last week. Vacuuming daily, washing bedding every other day.

Do I need to be doing more or less? I’m not sure. I don’t see anymore fleas but I am still getting a few bites.

I read the sticky and alpine flea seems to be the most recommended I checked the active ingredients and pet armor seems to be comparable it has an igr which seems important.

Do I just keep doing what I’m doing and give it time to work?