Honestly, they are at the age where hormones start and can interfere in rabbits bonding, and you may just need to keep them separate now until you can get them both spayed, wait 3-4 weeks minimum for the hormones to fade, then go through the proper bonding process. But just know that there is no guarantee they will rebond. Everything changes when a rabbit matures and those hormones come in. Baby rabbits that once got along can sometimes decide they no longer like each other as adults. Baby bonds aren't considered real bonds.
http://www.saveabunny.org/rabbitcare/bonding-guide
https://www.cottontails-rescue.org.uk/information/bonding-bunnies/
http://wabbitwiki.com/wiki/Bonding_rabbits_together
If either of them is continuing to show aggression towards the other through cage/pen bars, then I would even keep them in completely separate rooms until spayed, through the wait period, and then only put them near each other when you are ready to rebond.
DO NOT BATH! Bathing rabbits is generally not considered a good idea. At most only butt baths are suggested in extreme circumstances, when absolutely necessary. Full baths can be extremely stressful for rabbits, can cause a risk of hypothermia occurring, and in some instances it has even induced a cardiac arrest. I know some people do it, but I do not recommend it at all due to the possible health risks.
I don't recommend trying to put them back together right now, I recommend separation, but if you are intent on trying to get them back together, taking the urine or urine soaked litter of the dominant rabbit and rubbing it on the submissive rabbit may help get rid of the baby rabbits smell. But be aware that continued aggression and fighting now can not only result in possible serious injury(including a life threatening injury such as an evisceration, which does and can happen with aggressive rabbits), but could also cause building fear and resentment that could damage any possibility of a future bond occurring.