Hey, this is nothing to depressed or even stressed about! You still have some time and I'm sure it will be sorted. It's okay that you don't have lots of money to spend. There are so many nice things you can get him or make him! Making something is always super cute and shows you put time and effort in it which will be appreciated!
You could get some nice healthy cookbooks as he cooks and started a diet, frame a picture of you together that he could put up, you could get him some handy gadgets that are not too expensive like a portable charger or a headphone splitter and search for some other ones.
In terms of making things as suggested you could make coupons or make a jar with 100 quotes (doesn't have to be 100) of what you love about your daddy or you memories you shared together that he can open throughout the year. I made this for my daddy and he absolutely loved it
I react like that always whan I'm afraid I'll let someone down.
Yes! Handmade things are the best! I made my Daddy bracelets with alphabet beads that say "Daddy" and "Robert" (his name, obviously ). I gave him them a few months ago and he was so happy then.
I'll think of everything you suggested. Thank you so much!