Hi - sounds like he is very nearly able to drop the dreamfeed by himself.
Tracy says that the dreamfeed should continue until they are 8 months.
Here's what I did.
I used to do the df at 10.30 and I started moving it earlier in increments of 10 mins every few days until we got to 10pm.
When he was 8 months,I diceded to see what would happen if I didn't df - he woke at 2am and guzzled down the formula that I gave at the df (all other feeds were bf) so I went back to a 10pm df.
a couple of weeks later there was one night we'd been out and I really wanted to go straight to bed, I took it as an 'experiment' to see what happened. He didn't wake. He had stopped the df by himself at about 8.5 months.
Alex