Are my sentences correct? Hi there!
1.Since I have had more time, I am happy (I still have more time)
2.Since I started having more time, I am happy
3.Since I have had believed in my father I am even more happy
Thanks in advance
Sentences 1 and 2 are absolutely correct.
Sentence 3 is not; I'd suggest "started to believe" (as in sentence 2). ("Since I've believed in my father" feels very slightly strange—not wrong, but also not something I'm likely to say.)