I have this happen a lot to me as a top laner, and there really isnt any way you can avoid your bot lane feeding if they do. The best thing to do (if ahead) is to take your tower as soon as possible and move to push in the mid tower. Ask for jg help taking tower if you need it. Usually this will draw the enemy bot lane up to mid to help defend, and give your adc and supp some time to farm and catch up. The pressure you make on the map can easily counter an enemy adc being ahead. ZZ'Rot is a GREAT item, especially if you need both armor and mr, and works wonders in the mid game to help keep your enemies occupied. Never just keep pushing your lane if you have taken your tower unless its the only available objective you have at the moment. If your adc is still having trouble with the enemy bot laners, send them top to catch the farm that will be piling up, as the first thing top laners tend to do when they have their tower destroyed is to push it back, and hard. Remember, even if you are extremely ahead, it had become incredibly hard to SOLO carry games, i know i played that way all of season 4, 5, and 6. It is best to split the gold and kills between your team instead of you just taking them all, because even if a player is bad at the game, the items they have (or dont have) can still make them incredibly strong or weak.
The point is to not be super tunneled on pushing top really hard, instead, look around the map and see what objective would be easiest to take, and then go there. Also look at who on your team is doing poorly, and offer them handouts to help them along past their behind laning phase.