okay hunny, I will see what I can do for you. First of all breathe, and you will get thro this, I still have bumps in the road.
From what I remember of my time when dd was 5 1/2 mths, it is vague as she was sleeping erratically too, it seemed with her to lead up to a growth spurt and also about a month later she had teeth, so I think they were just forming back then.
From what I have learned with my dd on the EASY routine, especially at this age, is I think that maybe the two topics, eating and sleeping may go hand in hand.
I have had dd on EAEAS for a few months, as close as I can follow it anyway.
here is a rough daily routine from us
8:00am -E-wakeup and bf
8:15am -A-playtime
9:00am -E-solids, cereal
9:20am -A-playtime, feed usually takes 15mins or so.
10:30am-S-we begin our wind down, usually a hug on the couch in a nice warm blankie
11:00am-S-we aim for pd in crib at this time, we are still working on this part of self soothing, we are hoping the lengthened wind down will help
12:30 -E- wake up, usually on her own, I try to give her a meat and veg dish at this feed, maybe you could try a veggie dish
1:00pm-A-playtime
1:45pm-E-bf or bottle feed, depending which one I want to give her.
2:00pm-A-playtime
3:00pm-S- again we begin our wind down for a nap
3:30pm-S- if all goes well then we pd at this time
5:00pm-E- we have been giving fruit at this feed, but it is up to you, you may prefer a bf
5:20pm-A-playtime
6:00pm-E- we give dd a mik feed at this time
6:20pm-A-playtime
7:00pm-S- we start wind down time for bed
7:30pm-S- bedtime at this time, no later for us
I use bottled food for solids, so when we started, we would give dd 2 or 3 tbsp of cereal in the am, and then for the other two solid feeds we would split a jar between two feeds.
We have found that a little cluster feeding towards the end of the dayvworks for us.
Like I say this is only a guide to what we do, but you may find that by adding a little more food in the day may help him go down for naps a little easier, and maybe help at night too.
Oh! one thing I forgot to ask, do you df, I know some mums don't, but I when Istarted it I began it at 11pm and then when dd started waking for it I pulled the time back for a half hour, so she would be feed and in bad by the normal time she would wake up. It does take about a week to 10days for it to help lengthen the night sleeping tho. I got all frustrated by it and then I posted asking for help, someone told me to hold on, and a couple of days later, whammo it worked.
I hope this helps somewhat, I am sorry for it being a long reply, but I thought maybe the details would help you a little better.
Feel free to let me know if you need anymore help.
Good luck hunny, you can do it.