My Dad passed away about 7-8 months ago. I want to know how is he and ask the spirits for advise in my current situation.

Does not work that way. Sorry. Even if contact with the spirits are made, it is not a telephone to talk to specific spirits. Most are evil in intent and not for asking advice

Ask him yourself. You don't need to pay a scam artist to do so. I talk to my dad. Do I believe he's OK? I don't believe in an afterlife, but it sure is handy to talk to him anyway, because I miss him.
I assume that your dad was a good person, so you can assume that he's OK, without a care in the world, looking down on you, sitting just inside your ear. So listen and tell him the best things that happen to you each day, and joke about what he would really like. My dad loved jokes, so I tell him new ones.

Advice? I suppose you can ask him for advice. I did once, when my car nose dived over a stone wall after a snow storm. But mainly we are on our own after we lose someone. Why should they have to keep helping us? Give him some peace.

I think your dad's death is still fresh, and maybe remembering the things he has told you over your life may help you through what has to be a difficult time. That beats paying a stranger who claims certain abilities while you are obviously vulnerable to such suggestions.

Look inward for that guidance, and you may get the answers you seek from your own spirit.

How long did he spend raising you? I will assume he did a fair job since you're on the internet instead of the news. He has a new job now, so you'll have to finish this one yourself. That part of him that remains within you is available for advice, but the job is now yours.