“I didn’t get on the bike yesterday for five minutes even though I do want to get on the bike. This tells me that five minutes was too big of a goal. I wonder if I could get on for three minutes?”
If you're not meeting a goal, lower the threshold. If 5 minutes is too unobtainable, try 3 instead.
Set timers. You are only obligated to do that amount. If you keep going, great! If not, that's okay too.