Conor has the reach advantage and is a southpaw, I know I'm parroting others rhetoric but those are really two of the only things Conor has going for him. Conor may have big power, an awkward style with slightly different timing and angles than what Floyd is used to but that's about it...
Realistically Conor has no chance to beat Floyd but regardless Conor's best chance will be to do what he's used to doing. Use his reach, stay on the outside...hands low waiting for Floyd to come in on him and try to time a counter. While I think Conor will make visible improvements as a boxer preparing for this fight, it ultimately won't matter.
At the end of the day Conor's not a boxer though, he hasn't boxed since he was 14-15...he's been in an MMA gym since 16, traveling the world, Judo dojo's, tae kwon do dojo's, karate dojo's, he's had the same jiu jitsu and wrestling coaches for 13 years, he's flown in Ido Portal for movement based training geared towards MMA, he's flown in Dillon Danis for further Jiu Jitsu training, he's been sparring 5 minute rounds for the last 12 years preparing for 3 and 5 round fights, he's sparred with Kickboxers and mostly other MMA fighters, even when he trained boxing he was doing it for MMA purposes. He's not a boxer, sure he has skills that will crossover to boxing but you don't get prepared for a world class boxer in 8 months...let alone Floyd Mayweather. In Boxing they generally say it take 4-5 years to get your body prepared for a 10-12 round fight. The timing is different, the conditioning is different, the styles, angles, rules, round structures, the gloves, the ring, they are physically very different sports...It takes years for olympic gold medalist boxers to adjust to the differences between amateur boxing and professional boxing.....But Conor who's an 0-0 Pro boxer is going to do this in 8 months vs Floyd Mayweather? Get outta here.