duff the magic dragon

Ok i started playing regularly about 3 years ago...with my average score being someplace in the 120's. Nowdays, when and if im able to play 2 to 3 times a week i've got that shaved to consistantly play upper 80's to low 90's...with my best so far being 83. My local poorly kept 9 hole course has no driving range, nor is there one close enough to make it feasable to use for a guy who works 60 hours a week and has 2 small children at home. So the question is...is my improvement proceeding at a reasonsble pace?