Sounds to me like everything is going just beautifully

I would be letting him feed as much as he wants, especially in this weather. 2-3 hourly at 7 weeks is pretty normal for a BF bub I think, and 3 -4 hours overnight is normal too.
AR is a bit over 16 weeks and going roughly 4 hours overnight.

I don't know about dreamfeeding - I tried it & all it did was introduce an extra feed - if I don't get it to her in time now , she wakes for it! but then I figure if they are waking for it they need it. I don't think it hurts to give a dreamfeed, put it that way. If you make it the last thing you do before you go to bed there's no harm in it...

Sleeping between day feeds - I wouldn't worry so much about when he's been fed / wants to feed again but just how long he's been up. About an hour - hour & half is about right.

I think you are doing a great job!