Rocket, how are you today?
Well our situations are quite different, as we had different causes for the feeding trouble and chose different top-up methods and all. I was never really worried about nipple confusion but always about supply. Didn't really have latching problems (never any pain or soreness) but baby was too weak to feed.
So just pick and choose what applies to you!
I do totally agree with what someone said already, I think it was Japhrimel: Before you drop any top-ups or such, make sure your supply is established, and you're making enough milk for babyleaf. I.e. wait until you don't need any formula. Also I wouldn't start fooling around with things until I were certain that baby is putting on weight and generally healthy.
Unlike someone else who just reduced the amount baby got in top-ups gradually, that didn't work for us. DS had learned that there was going to be a bottle after the boob so he left space for dessert so to say, and nearly aways finished the bottle. We did reduce from 80ml after each feed (that was at 6 feeds/day) to 60ml on LC's advice. But I don't think we were going to 'gradually' get down from that.
So what we did is, we dropped whole top-ups. We went drastically down from 6 to 4, from one day to the next. That way DS learned quite quickly that there wasn't always going to be a bottle after the boob, and started bf more. We dropped the mid-morning and the mid-afternoon top-up. It was hard work - initially he was obviously still expecting the top-up, so didn't feed enough from boob, ergo he complained when there was no bottle. Managed to calm him down, but he hadn't had enough, so he was hungry and asking for more very soon - sometimes after 30 minutes already. So the first two days or so after dropping the two top-ups, it felt like I was constantly feeding. No more 'feeding every 4 hours' ...
After a few days, things settled down, and already it was such a relief - only having to express, and bottle feed, 4 times a day rather than 6 times!
After a week we dropped another whole top-up; the lunchtime one. That meant he now only got topups in the early morning (4, 5 am -ish), evening, and midnight. Again, when we dropped the top-up, he was feeding constantly for a couple of days. But afterwards, it was pure freedom! No faffing around with bottles, pumps, sterilisers, all day long! (Only at night...) From here on we definitely went to 7 feeds/day rather than the earlier 6.
Next we dropped the early morning top-up, and stayed like that for a while - two top-ups /day seemed really not very much trouble. Then the evening top-up, and finally the midnight one.
I chose to keep the nighttime top-ups until last, because at night I just couldn't deal with worrying about him getting enough, having to faff around for hours for him to be on the breast long enough, or having to feed constantly. When we did eventually drop them, it was quite pain-free as the association he had (boob means top-up afterwards) had already been broken, and he was used to feeding plenty from boob.
On and a little comment on the side: about 4 weeks after we had dropped the last top-up, we tried to give him some EBM in a bottle so that I could go out in the evening for a few hours. DS flatly refused. We never did get him to drink from a bottle again. By around 7 months this did quite annoy me, I felt tied down, we couldn't send DS to a childminder, couldn't ever leave him to a babysitter, I couldn't ever sleep through a night with DP doing the night feeding, ... but by around 8 months we had him drinking from certain cups (we tried about 10 different types until one worked), so things improved. All I'm saying is you might want to consider keeping a bottle going, perhaps one every two to three days. Just to give yourself some options.