Hi, and welcome! Hope that we can help you out

A couple of things I can suggest - first is that you actually just put him down for the night at 6pm. We roughly work on a 12h day and night, so I wonder if that waking him fully at 9pm is not helping and perhaps compounding the over tiredness from daycare? Can you move the bath to earlier on in the evening, or alternatively the morning if you have more time then? There's no reason it has to happen at night

I understand perhaps wanting to give him a feed around that time, but the way we usually suggest is to do a dreamfeed around 3-4h after going to bed for the night (9-10pm for you) which means you literally feed in their sleep. For most bottle fed babies this isn't too difficult - although you may need to play around with timings to catch him in a period when he isn't deeply asleep. I can ask for someone with bottle feeding experience to give you some more tips on this if you'd like (mine were breastfed so a bit different)? The alternative would be put him down at 6pm and just see when he wakes? I would expect him to need 2-3 feeds total between 6pm and 6am at this age so it's likely even if you do the dreamfeed you will need to get up at least once more - but it won't be forever I promise

With his feeds it sounds like you are right on track, actually. The general advice with bottles is if he is draining the bottle to add another oz to ensure he stops feeding when no longer hungry, but amounts sound fairly good to me. Over the next month or so you may want/need to think about moving towards 4 hourly feeds (same amount of milk but spread over fewer bottles) but this will in part be determined by how much he can handle at a time.
Those early morning wakings - you may find if you change the 9pm waking that they get better on their own. I would generally expect wakings at that hour to be due to over tiredness - or sometimes discomfort - rather than hunger if he has had a full feed between 2.30-4am. It may be that until he is a bit bigger and/or sleeps a bit better in the day that the early mornings will be a bit hit and miss. Does he get really upset or is he just awake? Does he need you to intervene?