I never thought....
Take a look at Ixchel's pics. She kept a pretty good timeline of her progress. Even around month 8, her hair looked pretty much still straight. She didn't see much progress for the first year. I, myself didn't see any progress for the entire firs year. So at 3 months, you aren't actually taking any longer than normal.
And NEVER use lemon juice in your hair. Lemon and lime juice is citric acid. While not strong on the scale of top 6 strong acids, it's more than harsh enough to seep into your hair shaft and break down your hair from the inside out. People use lemon juice to lighten their hair, and that lightening is how the damage first manifests itself.
The sea salt spray is a good way to help promote knotting. But again, only use it no more than 1-2 hours before you wash them. Leaving it in long term actually over dries your hair and scalp causing itchieness, and brittle/weak hair