You wouldn’t be the first to pull the boat out of the water without doing any fall maintenance. I would suggest you drain the lower unit into a clean container, if no water intrusion then transfer the lower unit oil into a squeeze bottle and put the “used” oil back in. I only use my Suzuki 20-30 hours/year and I’ve started changing my lower unit oil every second year. I do change my engine oil every year but only change the oil filter every second year. I own a Honda and a Suzuki, both manufacturers suggest changing oil on a yearly basis or every 100 hours(if memory serves). I’m not going to tell you to not change your oil but if I was in your position I wouldn’t change oil this year but next fall oil and filter would get changed even if I didn’t use it.
Your fuel system should be addressed, Ignoring the 2 runs this year your fuel is getting old and will continue to deteriorate over this winter potentially causing you grief next spring.