Re: Is it normal?
He can’t be busy all the time, and you will be his future wife. In the future he will need to balance you and work and even kids. You should ask him out for coffee, or ask your parents to invite him over, so you can get to know each other.
It may be religious reasons or shyness. But personally i would feel suspicious why he doesn’t keep contact. You need to get to know each other well. Wait a bit longer encase he is busy or some men like to pull away for a while then talk back and don’t like to be hassled .
If this is a continuing issue then i feel it is a problem, but if its only temporary its ok.