Should I omit or include jobs I have been at for less than 3 months in the Employment History section of Form I129f of the K1 visa?

I am having some trouble with my employment history for the last 5 years. Due to moving alot, I worked quite a few odd jobs here and there and many were for brief time periods. Due to these being short term jobs, my recollection of my exact time hired is not great. When putting the start and end date of a job could I just put the month and year instead of month, day, and year? Do I have to include ALL jobs worked even if I was there for a very brief amount of time(>3 months)? What about the jobs I had for a few weeks? Please help me with this. I would like to have some clarity regarding this issue I am having. Thank you all.