I hesitate to give you firm recommendations as obviously I don't know your DS - they are all different in terms of appetite and how well they are doing with solids. Also they all have different sleep requirements - if there's one thing I've got from MN, it's that 'average' babies are pretty rare
However I can point you to some useful info on sleep patterns/reqirements: here This really helped me when I was trying to untangle what to do with my DS who didn't seem to need any sleep (he did - he was just overtired!)
One main tip, which I'm sure you already know, is to have a consistent bedtime routine that helps them wind down. Ours starts at about 6-6.15. Toys away, storybook (or bedtime hr on cbeebies sitting on my knee), bath, up to bedroom with lullaby CD, bottle, down in cot awake (but if lucky, sleepy!)
We started by staying in the room with hands on DS, soothing him to sleep, now we are at the stage where I just hover in and out of the room and intefer as little as possible, just repositioning if he's got himself squished up in a corner (crawling & thrashing about) and putting dummy back in. Just saying 'sleepy-time' 'mummy loves you'. He gizzles, but doesn't 'cry', though he even did this when he was proper soothed to sleep - I think it is just something some babies have to do to get to sleep. We never leave him alone to actually cry.
I guess it's kind of a version of gradual withdrawl, but after looking at all of the 'techniques', I decided to not worry to much about following a strict method and just do what felt right. It took a few weeks to start seeing some reliable results, but evenings are far less stressful now and we get a decent chunk of sleep out of him in the first part of the night now. Still have to go back and settle him a couple of times a night - and the 4/5am is a partic danger zone, but it's definitely improving.
This the daytime schedule for my DS FWIW:
6-7am ? milk (boob)
7-8am ? breakfast
8.30-9: down for nap 50mins if lucky
10-10.30 formula
12pmish ? lunch
12.30-1: down for nap about an hour maybe hr&half to 2 hrs if lucky
3pmish formula
5pmish ? dinner
6.30-7pm ? formula
Sometime between 11.30 - 2am in the night depending when wakes ? milk (boob). Also occassional snacks (boob/ricecakes/fruit) throughout the day.
With naps they all have to be in the cot as he simply won't nap anywhere else - too much stuff going on! Hopefully your DS may go down in the buggy and/or car.
My DS is now nearly 8mths and we started working towards this at just gone 6mths when we moved him into his own room. Beforehand we were pretty much co-sleeping and EBF. Formula was intorduced as part of the weaning process and he really took to it, though I do still intend to keep up with some bf for as long as poss.
Hope you find a routine that works for you & your DS