Hi, congratulations on becoming a gran, its completely understandable how you are feeling but my advice to you would be definitely don't message every day, baby is only 3weeks old and mum and dad will still be overwhelmed and its only natural that your daughter in law will have her mum helping. Just concentrate on the coming years that you will I am sure build a good close relationship with your beautiful GS. I have 3grandchildren, sadly my younger son is now divorced but we still have a good relationship with our granddaughter, we realise her other grandmother lives closer and has more time with her but it is what it is. Our other grandchildren live down south and their other grandparents have a very close bond as they have helped bring them up but when we are able to go down we have a lovely relationship, we accept this is the downside of having sons, if it is a downside, lol.
Enjoy your grandson, I am sure you will build a lovely relationship with him over the years. Xx