Yes but first he should ask to do mediation with baby's mum.
Courts wont accept goung straight to this without having tried mediation snd they will provide a voucher to cover initial mediation sessions thrn its often done on a sliding scale by income.
When I did it we only had one mediation session and ex showed that he wasnt going to take it seriously so they then issued s certificate saying it needed court. Which I then had to show when I applied for c100 chokd arrangements.
This is a recent break up. You DSS must communice in email, text, politely focusing on best interests of baby at all times. No mud slinging, no personal atta ks keep it all child focused.
Offer his availability and say I can be flexible what works for the baby's routine and mum. Basically be super nice snd super child focused.
If communication is difficult you can suggest they use one of the court approved coparenting apps.
All of this will work in his favour.
Once every three weeks is not enough it needs to be little snd often something like 2 or 3 weekday sessions even if only short ie 3 hours, and one whole day each weekend. Every other weekend etc is not really suitable for a little baby who needs little and often contact.
What are both parents doing job wise? To try and work around that?
If DSS can facilitate 50 50 thrn thats great but he needs to move snd be closer for it to work well.