elvis I'll give you a clue here.
the reason why you are repeatedly checking things is because you aren't sure of what you are doing.
it happens to lots of pilots who aren't really up to speed with what needs to be done to get an aircraft configured for flight.
the checklist doesn't get you into the air. it is the actions that you are being prompted to do in the sequence that you are being prompted for that do the work of getting an aircraft airworthy.
look at your solo problem this way. at your current level of preparedness if anything at all occurred during the flight that was unexpected you would die in a state of panic trying to work out what to do.
aviation is an incredibly unforgiving environment for those who aren't competent.