I use the above as well, mixed into her morning porridge or yoghurt
We use the same brand mentioned already but the advanced in syrup form. Little one is great at taking meds from a syringe, so worked perfectly introducing it in one.
https://www.superdrug.com/health/vitamins-supplements/vitamin-d/abidec-multivitamin-drops-for-babies-children-25ml/p/199810?gclsrc=aw.ds&gad_source=1&gbraid=0AAAAADp4mz-W_5enzRbdVobtn96Oh6IS_&gclid=CjwKCAiAneK8BhAVEiwAoy2HYV5y3rf5eJ18YFosiKU_aKvmy8Ry0opZ6p1UDBOPpfJ3Jns56yOUBxoCm8gQAvD_BwE We have used these since 6M and get on well with them. She has started since increasing the dose now she’s 1 spitting it out so we are thinking of doing half in morning and half at night as the half dose was always ok!