End of sleep regression?

My son was going through the 4 month sleep regression, it's been about 3 weeks. He was fighting naps would only sleep if I rocked or nurses him and would only sleep 30-40 minutes. He was waking up 6-7 times a night and would only go back to sleep if I nurses him.

Last night he only woke up 3 times and both his naps today he put himself to sleep have they have been 1.5 - 2 hour naps.

I know it's only been a day and babies are constantly changing but does this sound like the start of the end lol? I'm one tired mom and can't wait for more sleep