Hi and welcome to BW!
This age is a tricky time for sleep as there's so much developmental stuff going on. The first thing that jumps out at me is that your A times are quite short for a near 7mo. Many are averaging near the 3hr mark rather than 2. It does depend whether or not you feel your LO might be HSN though? (High sleep needs) as you are getting some decent naps in there. I wish mine would've napped that long at 7mo.. We were plagued with the 45mins nap monster!
I think you may need to look at increasing those A times so you can look at dropping that last CN. That's quite a lot of day sleep for a 7mo so it may be impacting the nights and causing him to wake. That being said, you aren't having long drawn-out NW's so a Slow push in A times might be ideal.
It's really difficult to know how long to leave them to self-settle tbh. I think it's an individual thing. I too know that's it's just easier to go in and do a quick ssh/rub rather than have DD wake fully. As long as he knows how to self-settle when going to sleep in the first instance I think then they are capable of doing so during the night too if needs be. The more frequent crying NW's could be more from the discomfort of teething.
Ok, back to the day time. How do you feel about pushing those A times by 15mins, holding for a few days, then increasing again to get to at least 2.5hr A time? The reason we hold for a few days is so lo's can get used to the new times without becoming OT. You may find he will get grumpy when it's the usual time to go to bed, but this can be learned behaviour. I used to carry DD around for those last 15mins pointing out things in the house I needed to clean whilst she was asleep (sad, I know!), but it was low-key. Those 15mins used to be more hard work than the other 2odd hrs!
It will mean you will need to cap that CN to keep to a reasonable BT. I'd cap at 30mins initially and actually bring that last A in so it's shorter as many lo's can't do such a long A on a short CN. So maybe 1.75hrs max?
Eventfully what you want to work towards is something like this:
Wu 7
Nap 1 10-11.30
Nap 2 2.30-4
BT 7
Bear in mind that many lo's don't fall into this regular pattern, mine didn't. Took me a while to figure out she wanted a long first A and a much shorter A to bed, but it's just trial and error until we find out what your LO likes best.
Hth, here's some links you may find useful in the meantime x
All about the 3-2 transition- 5/6 monthsAverage A times- BOOKMARK ME!!Typical Amounts of Day and Night Sleep