Try using a 3cc or 3ml syringe...its about 7-10 pesos lang.  
The one for insulin is ok, just take out the needle.
 
For puppies, i usually use NEMATOCIDE (pyrantel embonate). 1ml/kg din.
If you puppy is less than 500 grams, just give .5ml.  
I dont really follow the "given" dosage when it comes to less than 1kg puppies. I feel safer if i give a little excess, they'll eventually poop it out anyway.  
 
I dont know if meron pa ba ngayun liquid na Canex. Before they had a suspension. That worked well.
 
Cost for the NEMATOCIDE...i got the 60ml bottle for about 300-350 pesos.