i gave DS egg at around 8 months - he would only eat it scrambled, and wouldn't eat it any other way.
Funny how we forget these things as my DD has just started solids and I can't for the life of me remember what we did with DS!
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my DD is 6.5 months and she gets solids 2x /day, at lunch and at dinner, and since she started solids she dropped her night feed, hurrah! If it helps, our routine looks like this. I work 4 mornings a week so my mum watches her during that time and gives her solids before I pick DS up from kindergarten and we're home for lunch.
I think you don't have to worry so much about the exact times/amounts for solids. If you go by the principles of 1) Ensuring LO is taking the plenty of milk, and 2) introducing foods slowly (to watch out for allergic reactions), you will do fine. The goal is to move TOWARDS 3 meals + 2 snacks per day, but each LO is different and they move toward that at different rates. There's no right/wrong way to do it - just what works for you and your family!
7:30am wake + BF
9-ish nap for 1-1.5 hours
11am solids (about 3 tbsp of cereal plus 1 tsp of veg, though she always seems to want more!)
12:30pm BF
1pm nap for 1.5-2 hrs
4pm BF
Sometimes still a catnap around 5pm for 30 mins
6pm dinner with her big brother (3 tbsp cereal plus 2 tsp veg)
8:15pm BF + bed
Yes she's still doing 3 naps but I've been going with cues and it seems to work fine with her bedtime, so I'm not messing with it!